Iron Crush Workout Mask for Training – Running Mask for Respiratory Strength Boosting – 24 Breathing Resistance Levels High Altitude Exercise Masks for Men and Women

Elevate your endurance and strength to the unmatched level naturally and gradually by charging your respiratory muscles with customizable 24 resistance levels. The Iron Crush workout mask is a single piece of training equipment, easy to add to your fitness routine, so you can now push your limits.   Why Oxygen Fitness Mask? The performance masks for working out at the gym cover your mouth and nose, cutting down on the amount of oxygen you take, and using it when training forces your heart and lungs to work harder. When you remove the oxygen mask for working out your body uses oxygen more efficiently, improving speed, endurance, mental and physical strength.   Professionally Built for Comfort and Durability Our one size fits all breathing workout mask comes armed with unique and novel qualities to ensure prime results. Innovative double loop and hoop fastening on the lower and upper straps for secure, and fully adjustable to the head size fit Larger flux valves in our lung mask for runners allow for easier removal Ultra-durable ABS plastic casing keeps all components intact for years of demanding workouts Robust reinforced stitching protects from breaking, fraying, and ripping   24 Adjustable Oxygen Deprivation Levels Purpose-designed for all workout levels and personalizing your intensity, this altitude mask for running comes with 24 breathing resistance levels, allowing to change airflow potency during workouts without taking it off.   The Ultimate Iron Crush Set You'll Ever Need Attractively presented in a beautiful box for the gift-ready occasion, our set includes: 1x Respiratory Workout Mask 2x Extra Flux Valves 1x Storage Bag 2x User Manual