The Redster J2 100-150 is made for youngsters aged approximately 5 to 8 years old, with the same graphics as Atomics World cup skis. Light cap construction and densolight core keep this ski extra light. Whats special in this one is the Bend-X technology, which is a special flex zone in the binding area that makes the J2 130-150 extra easy to turn. Atomics Race Rocker provides versatility and performance in all terrain. The C5 GW kids binding continues with the lightweight theme, while still being strong and reliable. Easy Step-In feature makes it easier start the ski day. This GW version of this binding also supports GripWalk soles. DIN up to 5. - 108-68-89 mm sidecut, 9 m radius (120 cm ski) - For ages approximately 5 to 8 - Bend-X technology - Densolite core - Cap construction Binding mounting and adjustment is included in the price. Remember to tell your weight and the length of your skiing boots outer sole (NOT the boot size number), so we can adjust the bindings according