O2Prime™
O2Prime™
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Shipping Details
Shipping Details
Ships in 5-7 days
Our Guarantee
Our Guarantee
At GrindFuel, we breathe performance. If the O2Prime doesn’t help you go further, harder, and longer — return it within 30 days for a full refund. No stress. Just stronger lungs.
Specifications
Specifications
- Material: Medical-grade silicone & durable ABS plastic
- Resistance Levels: 6 adjustable airflow settings
- Use Time: 5–20 minutes/day recommended
- Weight: Ultra-light (under 0.5 lbs)
- Included: Ergonomic mouthpiece, travel case, cleaning brush
O2Prime: Breathe better. Perform longer. Recover faster.
The O2Prime by GrindFuel is a precision-designed lung expander that trains your respiratory muscles the same way resistance builds strength. Whether you’re a runner, lifter, fighter, or weekend warrior, O2Prime boosts oxygen efficiency, increases lung capacity, and gives your endurance a serious upgrade.
Use it daily to improve breath control, reduce fatigue, and push past your limits—one inhale at a time.
Adjustable airflow resistance
- Adjustable airflow resistance to build lung strength over time
- Portable and lightweight— perfect for gym, training, or travel
- Supports VO2 max gains and oxygen endurance
- Ergonomic mouthpiece for comfort and consistent form
- Great for athletes, singers, divers, and recovery patients
- Unlock peak performance with O2 Prime—advanced oxygen-boosting support designed to power your endurance, sharpen your focus, and fuel every rep like a champion.