Lung Breathing Training Device,Sports Breathing Trainer Silicone Hypoxia Training Device Endurance Training Portable Breathing Apparatus Fitness Trainer For Runners, Athletes, Sports Lovers

【Build Muscle Strength】---Our muscle trainer helps improve throat muscle, requiring greater strength, thereby enhancing muscle strength.

【Adjustable Resistance Level】---The resistance valve is simple to adjust to meet different needs for achieving greater results

【Improves Overall Performance】---This well-built device is great for improving exercise tolerance and enhancing your performance day by day. Good choice for athletes, singers, smokers, etc.

【Easy to Clean and Use】---Simplicity of design. Sealed tight in an individual package. Easy cleaning and storage.

【Daily Improvement】---You can see the changes with regular use. Better function and better support. Nice addition to your training program or workout routine.