Speed and Strength Ss2400 Helmet - Solid The shell is constructed from an advance thermo-poly alloy and the interior liner features a moisture wicking and hypoallergenic liner that can be removed and washed. The Air Strike vents is a remarkable directional ventilation system. Face shield is locked into place with Lockdown security system and has optically correct with anti-scratch protection. Features A.t.p.a Advanced thermo-poly alloy shell Removable, washable, moisture wicking and hypoallergenic liner Air Strike Direct course ventilation system Tri-Tech 3-Stage integrated internal dark tint sun visor Additional clear internal visor included Single Action Removable Chin Bar 2 Shell sizes Meets or exceeds DOT and ECE 22-05 standards