The Two-Piece Ankle Strap contours to the shape of your boot and provides durability without extra weight. Urethane in the Slimebackâ„¢ Highback provides a smooth ride and allows for maximum lateral mobility. The A-Series Aluminum Chassis provides the reactive flex and power transfer of aluminum with less rigidity than previous designs. The canted footbed aligns your joints with a 2.5 degree angle while providing more leverage over the tip and tail of your board. Take this binding anywhere in any conditions. We promise it won't disappoint.