-100% Polyester Fiber (Polyester), Breathable And Comfortable.<Br>-Very Soft, Breathable, Water-Repellent, Washable, The Buckle Can Be Adjusted Tightly, And The Length Can Be Changed At Will According To Your Facial Contour To Prevent Leaving Marks On Your Face After Taking It Off.<Br>-It Is The Best Gift For You And Your Partner And Friends.<Br>-It Is Suitable For Adult Work, Cycling, Shopping And Travel , Is The First Choice For People'S Daily Life. <Br>-Fashion Print Design, You Will Become The Most Dazzling Person In The Crowd.<Br>-Care Instructions: Wash By Hand With Detergent, And Replace The Filter Every Day, Do Not Bleach!<Br>-If You Have Any Questions Or Want To Know More, Please Feel Free To Contact Us, We Will Reply You Within 24 Hours.