Louis Garneau - HG Sharp Cycling Helmet The sharp helmet has a ring-shaped plastic protection at the base of the helmet to reinforce the Perimeter for enhanced protection Moisture evacuation channels provide better airflow and moisture wicking Stabilizing system independent from the strap system. It can be adjusted and can be easily tightened using one hand Washable sealed adjustment padding for enhanced durability, and ergonomic design for optimum comfort Receptacle molded into the helmet that allows to install and remove the visor as often as desired