Face mask from ZEROFIT. Due to the current global situation, wearing masks is becoming etiquette even during sports. We have applied a unique “warp knitting” technology to develop a mask that is comfortable even during exercise. The mesh structure is different on the inside and the outside, so you can breathe easy by lining up during heavy exercise. It also has a cooling effect when it contains water, so it can also be used as a measure against heat during training.