Best Respiration Flow Meters. Reviews July, 2020

Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare

Search only Tina's Homecare brand name
Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare

Current price: 23.73 USD


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  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare

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SDI Diagnostics 29-7000 Mouthpieces for Peak Flow Meter / Spirometer, Disposable 100/Box

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SDI Diagnostics 29-7000 Mouthpieces for Peak Flow Meter / Spirometer, Disposable 100/Box

Current price: 47.53 USD


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Weight: 1.25 Pounds

  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included

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HealthAndYoga(TM) Deep Breathing Exerciser - Breath Exercise Measurement System

Search only SoulGenie brand name
HealthAndYoga(TM) Deep Breathing Exerciser - Breath Exercise Measurement System

Current price: 17.99 USD


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Height: 3 Inches

Length: 6 Inches

Width: 6 Inches

  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system

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Breathing Exercise Device, Lung Muscle Trainer with Adjustable Resistance Levels Inspiratory Expiratory Lung Expansion for Drug-Free Respiratory Therapy

Search only PROALLER brand name
Breathing Exercise Device, Lung Muscle Trainer with Adjustable Resistance Levels Inspiratory Expiratory Lung Expansion for Drug-Free Respiratory Therapy

Current price: 32.99 USD


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  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system
  • Convenient and Easy to Use: This expiratory/ inspiratory trainer is lightweight and portable. It is ready to go out-of-the-box, with no ongoing expenses. Best of all it's easy to care for and clean. Feel free to contact us if you have any questions.
  • Improve Oxygen Flow: This inspiratory exerciser benefits those who are undergoing respiratory treatment. It is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • Stronger Lungs: Whether you’re an athlete looking for a competitive edge or those who suffer from shortness of breath, the breathing trainer helps to expand and strengthen your lungs, which means you can breathe easier and enjoy a better quality of life.
  • Adjustable Tension Range Resistance: With 10 levels of adjustable impedance training stages, by adjusting the number of resistance to enhance the training impedance progressively for varying lung fitness levels.
  • Improving Respiratory Performance: Breathing exerciser boosts respiratory performance. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting belly diaphragmatic breathing.

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Allied Healthcare 15004-03 Chemetron Oxygen Flowmeter 0-15 LPM Ohmeda Adapter

Search only Allied Healthcare brand name
Allied Healthcare 15004-03 Chemetron Oxygen Flowmeter 0-15 LPM Ohmeda Adapter

Current price: 63.75 USD


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Weight: 3 Pounds

  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system
  • Convenient and Easy to Use: This expiratory/ inspiratory trainer is lightweight and portable. It is ready to go out-of-the-box, with no ongoing expenses. Best of all it's easy to care for and clean. Feel free to contact us if you have any questions.
  • Improve Oxygen Flow: This inspiratory exerciser benefits those who are undergoing respiratory treatment. It is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • Stronger Lungs: Whether you’re an athlete looking for a competitive edge or those who suffer from shortness of breath, the breathing trainer helps to expand and strengthen your lungs, which means you can breathe easier and enjoy a better quality of life.
  • Adjustable Tension Range Resistance: With 10 levels of adjustable impedance training stages, by adjusting the number of resistance to enhance the training impedance progressively for varying lung fitness levels.
  • Improving Respiratory Performance: Breathing exerciser boosts respiratory performance. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting belly diaphragmatic breathing.
  • Manufactured by Allied Healthcare Products

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Chemetron Corporation 15002-03 Oxygen Flowmeter 0-15 LPM W/Chemetron Adapter

Search only Chemetron brand name
Chemetron Corporation 15002-03 Oxygen Flowmeter 0-15 LPM W/Chemetron Adapter

Current price: 59.99 USD


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Weight: 2 Pounds

  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system
  • Convenient and Easy to Use: This expiratory/ inspiratory trainer is lightweight and portable. It is ready to go out-of-the-box, with no ongoing expenses. Best of all it's easy to care for and clean. Feel free to contact us if you have any questions.
  • Improve Oxygen Flow: This inspiratory exerciser benefits those who are undergoing respiratory treatment. It is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • Stronger Lungs: Whether you’re an athlete looking for a competitive edge or those who suffer from shortness of breath, the breathing trainer helps to expand and strengthen your lungs, which means you can breathe easier and enjoy a better quality of life.
  • Adjustable Tension Range Resistance: With 10 levels of adjustable impedance training stages, by adjusting the number of resistance to enhance the training impedance progressively for varying lung fitness levels.
  • Improving Respiratory Performance: Breathing exerciser boosts respiratory performance. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting belly diaphragmatic breathing.
  • Manufactured by Allied Healthcare Products
  • Manufactured by Allied Healthcare Products Inc

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THE BREATHER │ Hand-Held Inspiratory Expiratory Muscle Trainer for Drug-Free Respiratory Therapy │ FSA/HSA Eligible

Search only The Breather brand name
THE BREATHER │ Hand-Held Inspiratory Expiratory Muscle Trainer for Drug-Free Respiratory Therapy │ FSA/HSA Eligible

Current price: 39.95 USD

Saving: $8.00 (17%)


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Height: 1.8 Inches

Length: 5.1 Inches

Width: 1.7 Inches

Weight: 1.6 ounces

  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system
  • Convenient and Easy to Use: This expiratory/ inspiratory trainer is lightweight and portable. It is ready to go out-of-the-box, with no ongoing expenses. Best of all it's easy to care for and clean. Feel free to contact us if you have any questions.
  • Improve Oxygen Flow: This inspiratory exerciser benefits those who are undergoing respiratory treatment. It is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • Stronger Lungs: Whether you’re an athlete looking for a competitive edge or those who suffer from shortness of breath, the breathing trainer helps to expand and strengthen your lungs, which means you can breathe easier and enjoy a better quality of life.
  • Adjustable Tension Range Resistance: With 10 levels of adjustable impedance training stages, by adjusting the number of resistance to enhance the training impedance progressively for varying lung fitness levels.
  • Improving Respiratory Performance: Breathing exerciser boosts respiratory performance. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting belly diaphragmatic breathing.
  • Manufactured by Allied Healthcare Products
  • Manufactured by Allied Healthcare Products Inc
  • ONLINE VIDEOS AND A DEDICATED MOBILE APP | PN Medical, creators of The Breather, offer a self-paced, online video protocol training for therapists; patients and consumers. Additionally, with the Breather Coach mobile app, you can track and monitor your progress from your phone.
  • MONEY BACK GUARANTEE | 1.25 million people love it so we know you will too! But if you are not completely satisfied with The Breather, please reach out to us for a full refund. Since The Breather is designed for use by only one person, Amazon cannot accept returns directly so please reach out to the PN Medical team to process your return.
  • DRUG-FREE THERAPY FOR COPD, CHF, AND DYSPHAGIA | The Breather is used by those affected by COPD, CHF, dysphagia, and neuromuscular disease. Continued use has shown to improve dyspnea, peak cough flow, laryngeal function, QOL, vent weaning, and speech and swallowing performance.
  • DESIGNED TO HELP IMPROVE OXYGEN FLOW | This inspiratory exerciser benefits those who are undergoing respiratory treatment. The Breather is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • THE ONLY RMT DEVICE FEATURING INDEPENDENT INSPIRATORY/EXPIRATORY DIAL CONTROL | The Breather functions as both an inspiratory muscle trainer and expiratory muscle trainer with adjustable dials for independent resistance settings for inhalation and exhalation, making it the ULTIMATE device for respiratory care. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting diaphragmatic (belly) breathing.

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Voldyne 5000 Volumetric Exerciser

Search only Teleflex brand name
Voldyne 5000 Volumetric Exerciser

Current price: 6.99 USD


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Weight: 0.26 Pounds

  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system
  • Convenient and Easy to Use: This expiratory/ inspiratory trainer is lightweight and portable. It is ready to go out-of-the-box, with no ongoing expenses. Best of all it's easy to care for and clean. Feel free to contact us if you have any questions.
  • Improve Oxygen Flow: This inspiratory exerciser benefits those who are undergoing respiratory treatment. It is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • Stronger Lungs: Whether you’re an athlete looking for a competitive edge or those who suffer from shortness of breath, the breathing trainer helps to expand and strengthen your lungs, which means you can breathe easier and enjoy a better quality of life.
  • Adjustable Tension Range Resistance: With 10 levels of adjustable impedance training stages, by adjusting the number of resistance to enhance the training impedance progressively for varying lung fitness levels.
  • Improving Respiratory Performance: Breathing exerciser boosts respiratory performance. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting belly diaphragmatic breathing.
  • Manufactured by Allied Healthcare Products
  • Manufactured by Allied Healthcare Products Inc
  • ONLINE VIDEOS AND A DEDICATED MOBILE APP | PN Medical, creators of The Breather, offer a self-paced, online video protocol training for therapists; patients and consumers. Additionally, with the Breather Coach mobile app, you can track and monitor your progress from your phone.
  • MONEY BACK GUARANTEE | 1.25 million people love it so we know you will too! But if you are not completely satisfied with The Breather, please reach out to us for a full refund. Since The Breather is designed for use by only one person, Amazon cannot accept returns directly so please reach out to the PN Medical team to process your return.
  • DRUG-FREE THERAPY FOR COPD, CHF, AND DYSPHAGIA | The Breather is used by those affected by COPD, CHF, dysphagia, and neuromuscular disease. Continued use has shown to improve dyspnea, peak cough flow, laryngeal function, QOL, vent weaning, and speech and swallowing performance.
  • DESIGNED TO HELP IMPROVE OXYGEN FLOW | This inspiratory exerciser benefits those who are undergoing respiratory treatment. The Breather is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • THE ONLY RMT DEVICE FEATURING INDEPENDENT INSPIRATORY/EXPIRATORY DIAL CONTROL | The Breather functions as both an inspiratory muscle trainer and expiratory muscle trainer with adjustable dials for independent resistance settings for inhalation and exhalation, making it the ULTIMATE device for respiratory care. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting diaphragmatic (belly) breathing.
  • Single-patient use.
  • Compact, ergonomic design with built-in handle.
  • Large volume measurement and advanced low-work-of-breathing filter.
  • Capacity: 5000ml
  • Quantity: 1

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Ultrabreathe – The World’s No 1 Selling Respiratory Trainer - with 6 Colors to Choose from (Red)

Search only Ultrabreathe brand name
Ultrabreathe – The World’s No 1 Selling Respiratory Trainer - with 6 Colors to Choose from (Red)

Current price: 19.99 USD

Saving: $5.00 (20%)


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  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system
  • Convenient and Easy to Use: This expiratory/ inspiratory trainer is lightweight and portable. It is ready to go out-of-the-box, with no ongoing expenses. Best of all it's easy to care for and clean. Feel free to contact us if you have any questions.
  • Improve Oxygen Flow: This inspiratory exerciser benefits those who are undergoing respiratory treatment. It is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • Stronger Lungs: Whether you’re an athlete looking for a competitive edge or those who suffer from shortness of breath, the breathing trainer helps to expand and strengthen your lungs, which means you can breathe easier and enjoy a better quality of life.
  • Adjustable Tension Range Resistance: With 10 levels of adjustable impedance training stages, by adjusting the number of resistance to enhance the training impedance progressively for varying lung fitness levels.
  • Improving Respiratory Performance: Breathing exerciser boosts respiratory performance. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting belly diaphragmatic breathing.
  • Manufactured by Allied Healthcare Products
  • Manufactured by Allied Healthcare Products Inc
  • ONLINE VIDEOS AND A DEDICATED MOBILE APP | PN Medical, creators of The Breather, offer a self-paced, online video protocol training for therapists; patients and consumers. Additionally, with the Breather Coach mobile app, you can track and monitor your progress from your phone.
  • MONEY BACK GUARANTEE | 1.25 million people love it so we know you will too! But if you are not completely satisfied with The Breather, please reach out to us for a full refund. Since The Breather is designed for use by only one person, Amazon cannot accept returns directly so please reach out to the PN Medical team to process your return.
  • DRUG-FREE THERAPY FOR COPD, CHF, AND DYSPHAGIA | The Breather is used by those affected by COPD, CHF, dysphagia, and neuromuscular disease. Continued use has shown to improve dyspnea, peak cough flow, laryngeal function, QOL, vent weaning, and speech and swallowing performance.
  • DESIGNED TO HELP IMPROVE OXYGEN FLOW | This inspiratory exerciser benefits those who are undergoing respiratory treatment. The Breather is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • THE ONLY RMT DEVICE FEATURING INDEPENDENT INSPIRATORY/EXPIRATORY DIAL CONTROL | The Breather functions as both an inspiratory muscle trainer and expiratory muscle trainer with adjustable dials for independent resistance settings for inhalation and exhalation, making it the ULTIMATE device for respiratory care. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting diaphragmatic (belly) breathing.
  • Single-patient use.
  • Compact, ergonomic design with built-in handle.
  • Large volume measurement and advanced low-work-of-breathing filter.
  • Capacity: 5000ml
  • Quantity: 1
  • Easy to clean - simply bathe in warm soapy water for about 10 minutes, remove and then rinse under warm water
  • As you inhale, the resistance created makes your respiratory muscles work harder, and the harder they work the stronger and more durable they become
  • Adjustable over a wide range of resistances making it suitable for users at all fitness levels.
  • Anti-bacterial medical grade PVC mouthpiece (Phthalate, BPA and Latex Free)
  • The Ultrabreathe device is patented, CE marked and manufactured in the UK to exacting European health & safety standards

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Expand-A-Lung Breathing Fitness Exerciser

Search only Expand-A-Lung brand name
Expand-A-Lung Breathing Fitness Exerciser

Current price: 29.95 USD


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  • Oxygen Gas Liter Flow Meter Measures 0-8LPM by Tina's Homecare
  • Peak Flow Meter Not Included
  • Complete Instructions Provided; See video in images alongside; Ball Colors may vary
  • Helps achieve optimum lung capacity and restoring disrupted breathing patterns
  • Deep Breathing Exerciser for comprehensive respiratory fitness - 3 chambers for differing inhalation rates from 600cc/sec to 1200 cc/ sec
  • Solid, non-shaky Construction; Removal bottom for thorough cleaning and hygiene maintenance
  • Compact, high quality break-resistant plastic, 3-ball inhaling breath measurement system
  • Convenient and Easy to Use: This expiratory/ inspiratory trainer is lightweight and portable. It is ready to go out-of-the-box, with no ongoing expenses. Best of all it's easy to care for and clean. Feel free to contact us if you have any questions.
  • Improve Oxygen Flow: This inspiratory exerciser benefits those who are undergoing respiratory treatment. It is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • Stronger Lungs: Whether you’re an athlete looking for a competitive edge or those who suffer from shortness of breath, the breathing trainer helps to expand and strengthen your lungs, which means you can breathe easier and enjoy a better quality of life.
  • Adjustable Tension Range Resistance: With 10 levels of adjustable impedance training stages, by adjusting the number of resistance to enhance the training impedance progressively for varying lung fitness levels.
  • Improving Respiratory Performance: Breathing exerciser boosts respiratory performance. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting belly diaphragmatic breathing.
  • Manufactured by Allied Healthcare Products
  • Manufactured by Allied Healthcare Products Inc
  • ONLINE VIDEOS AND A DEDICATED MOBILE APP | PN Medical, creators of The Breather, offer a self-paced, online video protocol training for therapists; patients and consumers. Additionally, with the Breather Coach mobile app, you can track and monitor your progress from your phone.
  • MONEY BACK GUARANTEE | 1.25 million people love it so we know you will too! But if you are not completely satisfied with The Breather, please reach out to us for a full refund. Since The Breather is designed for use by only one person, Amazon cannot accept returns directly so please reach out to the PN Medical team to process your return.
  • DRUG-FREE THERAPY FOR COPD, CHF, AND DYSPHAGIA | The Breather is used by those affected by COPD, CHF, dysphagia, and neuromuscular disease. Continued use has shown to improve dyspnea, peak cough flow, laryngeal function, QOL, vent weaning, and speech and swallowing performance.
  • DESIGNED TO HELP IMPROVE OXYGEN FLOW | This inspiratory exerciser benefits those who are undergoing respiratory treatment. The Breather is a respiratory trainer or respiratory exerciser that improves lung strength and capacity by improving oxygen uptake to vital organs.
  • THE ONLY RMT DEVICE FEATURING INDEPENDENT INSPIRATORY/EXPIRATORY DIAL CONTROL | The Breather functions as both an inspiratory muscle trainer and expiratory muscle trainer with adjustable dials for independent resistance settings for inhalation and exhalation, making it the ULTIMATE device for respiratory care. Think of it as a lung trainer, supporting respiratory health and efficiency by promoting diaphragmatic (belly) breathing.
  • Single-patient use.
  • Compact, ergonomic design with built-in handle.
  • Large volume measurement and advanced low-work-of-breathing filter.
  • Capacity: 5000ml
  • Quantity: 1
  • Easy to clean - simply bathe in warm soapy water for about 10 minutes, remove and then rinse under warm water
  • As you inhale, the resistance created makes your respiratory muscles work harder, and the harder they work the stronger and more durable they become
  • Adjustable over a wide range of resistances making it suitable for users at all fitness levels.
  • Anti-bacterial medical grade PVC mouthpiece (Phthalate, BPA and Latex Free)
  • The Ultrabreathe device is patented, CE marked and manufactured in the UK to exacting European health & safety standards
  • BUY DIRECT FROM THE MANUFACTURER & SAVE!!! - "MADE IN USA" - FREE SHIPPING + FREE MANUFACTURER'S 5 YEAR FULL WARRANTY + 100% MONEY BACK GUARANTEE IF RETURNED WITHIN 60 DAYS.
  • "AMAZON'S BEST SELLING & BEST RATED BREATHING FITNESS EXERCISER (4.7 STARS RATING)" - FEATURED IN THE FOLLOWING MAGAZINES: "RUNNER'S WORLD", "TRIATHLETE", "TRIATHLON CANADA", "AUSTRALIAN TRIATHLON & MULTISPORTS", "VELONEWS CYCLING", "FREE SURF HAWAII", "SKIN DIVER", "HAWAII SKIN DIVER", "INTERNATIONAL FREEDIVING", "THE BOX (CROSSFIT)"
  • USED BY NAVY SEALS, AND ATHLETES". THE BEST 7 MINUTE EXERCISE TO BOOST ENDURANCE - THE #1 CHOICE OF THE L.A. TIMES REVIEW- "SUPERIOR QUALITY AND BEST VALUE" - "MOST COMPACT (4") AND PORTABLE" - "EASIEST TO USE " - "MOST EFFECTIVE" - "IMPROVES ENDURANCE, BREATH HOLDING & SHORTNESS OF BREATH" - "PROVIDES 100% ADJUSTABLE RESISTANCE FOR INHALING (INSPIRATORY) & EXHALING (EXPIRATORY)".

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