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The O2Trainer 2.0
The O2Trainer 2.0
The O2Trainer 2.0
The O2Trainer 2.0
The O2Trainer 2.0
The O2Trainer 2.0
The O2Trainer 2.0
The O2Trainer 2.0
The O2Trainer 2.0

The O2Trainer 2.0

Sale price $59.95 | Free Shipping

  • Designed By Bas Rutten
  • Backed By Clinical Studies
  • As Seen On The Joe Rogan Experience
  • 35,000+ Orders Packed & Shipped
  • Made in the USA
Color: Green

What is the O2Trainer?

The O2Trainer 2.0 Breathing Resistance Training System is the ultimate tool for athletes, fitness enthusiasts, and anyone looking to improve breathing performance, endurance, and core strength. Developed by MMA legend Bas Rutten, this system targets and strengthens your diaphragm and breathing muscles by controlling airflow during inhalation.

Level up your breath. Level up your training.

Why Use the O2Trainer?

  • Increases lung capacity and oxygen efficiency
  • Enhances athletic performance and stamina
  • Strengthens the diaphragm and core
  • Easy to use—great for home, gym, or travel
  • Used by pro athletes, fighters, and everyday wellness warriors

What’s Included?

  • O2Trainer Device: Scientifically designed to isolate and strengthen your breathing muscles, especially the diaphragm—helping you breathe more efficiently during workouts or daily life.
  • 16 Interchangeable Resistance Caps (1mm–14mm): Gradually increase resistance to improve lung capacity and breathing strength. Start where you're comfortable and progress at your pace.
  • Training Guide + Video Instructions: Step-by-step "How-To" pamphlet and access to online video tutorials ensure you're getting the most effective and safe training possible.
Daily Energy Daily Energy
Stay Calm Stay Calm
Sleep Better Sleep Better
Performance Performance
Less Pain Less Pain

Respiratory Training Made Simple

Whether you're an athlete, recovering from lung challenges, or simply seeking better wellness, our device makes lung training accessible, effective, and life-enhancing.

Energy

Boost your daily vitality by improving oxygen efficiency — no crash, just lasting natural energy.

Sleep

Better breathing helps you relax deeper, leading to more restful and restorative sleep.

Calm

Train your breath to stay centered and in control, even under stress or pressure.

Respiratory training device

Endurance

Strengthen your lungs to go farther and last longer in workouts and daily activities.

Relief

Support lung function and reduce breath-related discomfort for easier, smoother breathing.

Performance

Unlock peak physical output with stronger lungs that fuel your body and mind.

Real Results, Real People

See how the O2Trainer is helping athletes, fitness enthusiasts, and everyday people breathe stronger and perform better.

It's made a huge difference in my training and health.
—Matt Spaid
★ ★ ★ ★ ★
Verified Buyer

Who is it for?

Stronger lungs mean stronger performance. Training your breathing system improves oxygen efficiency, endurance, recovery, and overall resilience.

Controlled breathing exercises can help manage asthma symptoms and improve lung function through targeted respiratory training.

Respiratory training can help improve breathing efficiency and quality of life for those managing COPD symptoms.

Breathing exercises are a proven technique for managing stress, anxiety, and PTSD symptoms through controlled respiratory training.

Founder of O2Trainer

Meet the Founder

Bas Rutten

2015 UFC HALL OF FAME

After years of struggling with breathing issues and seeing how it affected my athletic performance, I knew there had to be a better way. That's when I created the O2Trainer—a simple yet powerful device that has transformed not just my life, but thousands of others.

From professional athletes to everyday people dealing with respiratory challenges, the O2Trainer has become a game-changer in breathing wellness.