Large – SFI - 20 Degrees - Post Anchor. Now offered in 3 different sizes, the Hans IV is a new and improved FHR (Frontal Head Restraint) that is 10% lighter than the previous Hans III. Custom molded pads which nest into the device, preventing slippage, were designed with an upgraded foam for improved comfort and support. Offered a 20 -degree option, this FHR is perfect for the entry level driver across many race series. Each HANS device is sold complete with two anchors (enough for one helmet), pads, and matching tether.