The bike helmet adopts tough shell with soft liner which could absorb external pressure caused by crash in cycling activities.Size: L56-62cm adjustable With removable, protective, sweat absorption lining pad, comfortable to wear and easy to wash. vents design effectively reduce air resistance and sweating. Rotary internal regulator adjusts the tightness of helmet. The cycling helmets come with an adjustable strap which flexible to fit the size. For Bicycle helmet Integrally-molded Road Mountain Bike Helmet Ultralight Racing Riding Cycling Helmet bike accessories Color:Lake Blue Material:PC+EPS Package Contents: 1 x Men's Bicycle Helmet Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.