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Achieve the effects of a High Altitude Workout Efficiency when training, which helps decrease & maximizes your workout time4-Level Resistance Valve System - Increase and Conditions Lung Capacity by Creating Pulmonary Resistance
Simple Usage, Ultra-Lightweight, Anatomically Designed, Non-Slip Training Strap, One Size Fits Most - From 120 to 230 LBS
Strengthens the Diaphragm, Trains Breathing Muscles and Improves Overall Performance in any Sport
Covered by Aduro Sport Lifetime 100% Satisfaction Guarantee - This training mask is designed to last for years! If you have any issues at all, simply let us know. We'll either replace it at no cost or issue you a full refund!