1. Moisturizing， sweating and breathability， powerful hygroscopic perspiration compression technology. When sweating， cooling and cooling channel technology through air， cooling down and cooling， and transforming sweat into energy2 Honeycomb ventilation at the mouth and nose， and the honeycomb state is freely woven in the mouth and nose， and the breathability is not hot， so you can breathe freely while keeping warm3. Patching the head of the head and preventing wind and warmth， the wind and warmth are better， and wearing a helmet is smooth. (No helmet)4. High bomb nylon fabric， good woven elasticity， high strength， good abrasion resistance5. This mask is suitable for skiing， motorcycle， skiing， cycling， construction dust， warehouse work and snow shovel masks， and outdoor activities like this.