Generic 26 Vents EPS Outdoor Sports Mountain Road Mtb Cycling Bike Bicycle Ultralight Helmet Lightweight integrally-molded bicycle helmet Made of EPS, high density, durable and comfortable 26 vents bring cool air in and flush warm air out, well-ventilated With removable, protective, sweat absorption lining pad, comfortable to wear and easy to wash Adjustable strap as well as adjuster within to adjust the size of head circumference