Kenmerken en voordelen
- Made from food-grade silicone and breathable nylon for optimal comfort.
- Adjustable to 25 levels for personalized training intensity.
- Improves lung function and endurance, scientifically proven for better performance.
- Conveniently washable for easy maintenance and hygiene.
- Factory-sealed; slight odor may dissipate after drying.
- Ideal for athletes looking to reduce training time and enhance workout quality.





