The Alias AmpTek is for young rippers who"ve got the skills, just not the size. This true twin with AmpTek Auto Turn rocker makes the Alias easy to maneuver, press, pop and ride switch. Created from the same DNA as the legendary Decoy and Retox, the Alias AmpTek has the heritage to meet the demands of future hard- charging legends. Key Features of the Rossignol Alias Amptek Snowboard: 20% Camber 80% Rocker3/10 FlexShape...............True Twin w/AmpTek AutoTurn RockerFlex...................Twin FreestyleTips...................Progressive Radius 380Waist.................232 to 246mm Sidecut.............6.5 to 6.7m Single radiusCore.................Wood 5620Base.................Extruded 1320Range...............Recreational to IntermediateLength (cm): 135, 140, 145Running Length (cm): 95 (135), 100 (140), 104 (145)Tip/Tail Width (cm): 27.1 (135), 28.53 (140), 28.86 (145)Waist Width (cm): 23.2 (135), 24.4 (140), 24.6 (145)Sidecut (m): (135), (140), (145)