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

PERFORMANCE-BOOSTING TRAINING MASK - This athlete workout mask effectively improves workout results by simulating altitude training via the flux-valve system to strengthen respiratory muscles, increase lung capacity and boost your results BUILT FOR PROS, WORKS FOR ANYONE - This oxygen depravation mask for elevation training has 24-resistance levels so even athletes who are not used to high altitude training can build up their resistance to get better workout results while doing it safely BUILT FOR PROS, WORKS FOR ANYONE - This oxygen depravation mask for elevation training has 24-resistance levels so even athletes who are not used to high altitude training can build up their resistance to get better workout results while doing it safely FITS ALL ATHLETES COMFORTABLY - This high altitude mask for working out has double fastening straps with hook and loop fasteners on both the bottom and top straps to ensure the perfect fit for all head shapes and sizes for additional comfort EVERY DAY DURABILITY - This training mask is top of the line as it has thicker and bigger flux valves, a wrap around rubber strap for durability, stronger levers and two hook and loop straps and bigger flux valves to remove and change them much easier TRAIN HARD TO BE BETTER - No one ever said that achieving your physical goals were going to be easy, and the only way you can be the best is by putting in the hard work and increase your stamina under normal circumstances by training harder than conditions require

Professionally Built for Comfort and Durability 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 The Ultimate Iron Crush Set You'll Ever Need 1x Respiratory Workout Mask 2x Extra Flux Valves 1x Storage Bag 2x User Manual