<b>COMFORTABLE FUNCTIONAL FABRIC: You are the unique one when you wearing this. Fabric is 4-way stretch, It's very soft and close to your skin. No worry about sweating. Can draw sweat away from your face and dry quickly, UV-Proof, Dust-Proof, Sand-Proof, Windproof. Wear it as a face mask to protect your face get burned from sun rays directly Also they help keep your nose and mouth clean from breathing dust