Bell Adrenaline Black Mat Bike Helmet, Adult: * Innovative helmet design * Visor offers protection from the sun and elements * Rear reflector offers added visibility * QuickFit system delivers the optimal fit * Exclusive Bell CamLocks adjust easily for a comfortable fit * PinchGuard buckle for no-pinch buckling * 16 vents help to keep you cool See our entire assortment of bikes and ride on toys at Walmart.com.