O2 Trainer

35 reviews

Make Every Breath Count

  • Regulates air intake and improves muscle oxygen efficiency during exercise
  • Strengthens your lungs and breathing muscles in your upper abs
  • Amazing results with 30 reps (four minutes) a day
  • Designed to fit in an easy to pack portable kit

Official Respiratory Training from Bas Rutten

Designed by Bas himself to increase inspiratory (inhalation) muscle endurance, the O2 Trainer is a lightweight device that regulates air intake and improves muscle oxygen efficiency during exercise.


Improve Breathing Power

The O2 trainer restricts air intake to strengthen your abdominal muscles and regulates your breathing form - training your body to properly take in deeper breaths and more oxygen.

Defeat Training Fatigue

The ability to intake more oxygen and breathe properly leads to improved body composition and supports a healthy circulatory system.

Gain Lean Muscle

Change resistance levels by using one of the 14 included air intake caps. As your endurance increases, change out the intake cap to reduce airflow and increase resistance. As your air intake decrease your body will build muscle strength while learning proper form for deeper breaths.


Follow along with Bas as he leads you through a simple breathing exercise with your O2 trainer to build stronger lungs and increase your oxygen intake - all it takes is 30 reps and less than 3 minutes a day!


Athletes, Performers and Asthma-Sufferers

Whether you’re a serious athlete, singing opera, playing an instrument, scuba diving or just suffering from asthma, the O2 trainer will train your lungs and body to perform at high levels with less oxygen, and teach you how to maximize every breathe.

Any Exercise or Activity

Engineered to increase inhalation muscle endurance, stamina and overall performance, the O2 Trainer is lightweight and designed to be used while performing nearly any exercise or activity.


Breathe Better. Live Better.

The health benefits are vast including rapid fatigue recovery, heightened concentration and alertness, and calming effects for the entire nervous system.

Customer Reviews
4.8 Based on 35 Reviews
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Filter Reviews:
    Australia Australia
    I recommend this product

    Awesome product

    I love it. Used correctly its very effective. A must for anyone who trains , sings, swims. Great product very simple but very effective. I love it. Thanks Bas

    Neil E.
    United Kingdom United Kingdom
    I recommend this product

    No Case

    I'm writing this review due to an email I've just had requesting one. I've only been using this product for 3 weeks so it's still early days to say if there are any benefits. I like the idea and I'm convinced I will see improvements. I do have one issue and it was a disapointment as in reviews and videos on the site I had seen these come in a nice hard plastic box, only I received mine in a cheap cardboard box, which was a bit of an insult considering how much I paid for the product. This is my reason for giving it 4 stars instead of 5.

    Neil Edwards verified customer review of O2 TrainerNeil Edwards verified customer review of O2 TrainerNeil Edwards verified customer review of O2 Trainer

    Hello Neil , Since we were looking for making this product "all green" we have changed the packaging to biodegradable carton. But .. we do still have some of the older versions in stock and I will send you a plastic case if you still want it .

    Toby C.
    Australia Australia
    I recommend this product

    Great product

    Easy to use, have seen improvement

    United States United States
    I recommend this product

    o2 trainer

    It works. Really builds your breathing muscles if you do 2 sets a day like they recommend. Wish it cost less.

    Chris B.
    United States United States
    I recommend this product

    good product

    I feel like my chest is expanding. I am learning to breathe again. Thank you.

    Chris Baker verified customer review of O2 Trainer

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