The Sphere helmet is your buddy on the road. Available in 4 sizes and created with our Advanced Rollsys fit system, we aim to bring you ultimate comfort in a perfectly-fitting helmet. 18 cooling inlets and exhaust ventilation holes connected by carefully engineered air channels are designed to draw air from the front to the rear of your head - keeping you cool and on top performance for the duration of your ride. On rainy days the Sphere can be combined with the Aeroshell available as an accessory to protect you from the elements. The convenience is delivered with an in-mold construction and details including: Eyewear docking. Thinner straps. Reflective stickering. And a ponytail friendly rear design.