Take your training to a whole new level with this 6-level, one-size fits all training mask! W Sport Training Mask 3.0Level 1(Simulated altitude 1600FT) Level 2(Simulated altitude 3200FT) Level 3(Simulated altitude 9800FT) Level 4(Simulated altitude 13000FT) Level 5( Simulated altitude 16000FT) Level 6(Simulated altitude 19000FT) Amazing for sports such as Running, Cycling, Cardio, Fitness, Endurance Training, Crossfit. Train with the ultimate hypoxic resistance mask Product Details: Achieve the effects of a High Altitude Workout Efficiency when training, which helps decrease & maximizes your workout time 6-Level Resistance Valve System - Increase and Conditions Lung Capacity by Creating Pulmonary Resistance Simple Usage, Ultra-Lightweight, Anatomically Designed, Non-Slip Training Strap Strengthens the Diaphragm, Trains Breathing Muscles and Improves Overall Performance in any Sports
