A lightweight full-face helmet with ASTM Downhill certification.The Leatt 1.0 Gravity is a full-face helmet with solid protection. The focus of this helmet is premium safety and great value. Featuring 360 ̊ Turbine Technology, the helmet is lined with turbines which are 360 ̊moving discs constructed from an energy-absorbing shape and material, this tech has two exclusive advantages, namely the reduction of rotational acceleration to the head and brain and the absorption of energy upon impact at concussion level. Get full face head and brain protection at an amazing price.