This binding is a race machine. Designed for an advanced racer with a weight range of 50 to 90 KG. It is uber light, tough and easy to use. The fixed release eliminates weight and you still have the option of racing flat or with a single 38 mm riser. 4 screw heel and toe allow for a very secure mount. The binding is ISMF certified, has a 2 yr warranty and is crampon capable.