(as of Mar 24,2021 02:24:53 UTC – Details)
BUILDS ENDURANCE: For athletes looking to increase stamina, lung capacity, and overall performance
RUGGED MATERIAL: Universal size unisex mask outfitted with an ultra durable PP plastic front cover
TRAIN YOUR LUNGS: Our Hypoxic Mask trains your breathing paterns and improves your lung capacity.
CHANGE RESISTANCE: Easily switch the resistance while you working out. No need to take your mask off