Bell Pit Boss Helmet The Bell Pit Boss is the go-to half helmet for riders that put down long miles and want more than a bare bones skid lid. With a lightweight Tri-Matrix shell and the first of its kind Speed dial fit system that prevents Helmet Bobble plaguing most other half helmets, a drop-down internal sun shield provides instant protection from the sun, and a removable neck curtain not only offers cold weather protection but also houses speaker pockets should as a convenient way to add audio enhancement. Snug the Pit Boss onto your head, thumb the starter button, one ride will confirm the Pit Boss as the King of the Road. Shell: Lightweight, TriMatrix composite shellKevlar/Carbon/Fiberglass blend 2 shell sizes MD: SM and MD helmets LG: LG and Xl/2Xl helmets Shield: Shield offers 100 UVA and UVB protection Internal Sun Shade offers on the fly protection from the sun Comfort: Innovative Speed Dial adjustable fit system Removable neck curtain for cold weather riding Convenient speaker pockets make it easy to set up the Pit Boss with communication devices Safety: DOT approved Five year warranty