Gmax HH-75 Solid Half Helmet Size:XS The Snowpulse Air Cylinder is

The Snowpulse Air Cylinder is a refillable canister

The Sentinel Armor is constructed of light weight closed cell molded AEPE foam

When combined with the 6D Air-Gap Technology in the helmet

Knee pivot system: new double-pivoting hinge system incorporating tool-free

now it comes with a Hd version

Gmax HH-75 Solid Half Helmet Size:XS The Snowpulse Air Cylinder isGmax HH 75 Solid Half Helmet The GMax HH75 Helmet comes loaded with all the options you'll ever need in a half helmet. Clear and dark UV resistant internal sun shields protect eyes in any weather. A removable snap in neck curtain combined with internal speaker pockets provide warmth and intercom capabilities. Features Dual density EPS technology allows for a low profile look and fit Removable snap in neck curtain with internal speaker pockets