Goliton 2014 Hot 20 Vents Cycling Helmet Ultralight Sports Capacete Road MTB Bike Bicycle EPS+PC Material Mountain Bike Helmet Made of EPS, high density, durable and comfortable. 20 vents bring cool air in and flush warm air out, well-ventilated. With removable, protective, sweat absorption lining and cerebral pad, comfortable to wear and easy to wash. With removable visor and adjustable strape, head circumference: 57~62cm, head width: 17.5cm. Stay safe while cycling with the bike helmet, perfect for beginners on-road and off-road use.