Race technology and bootfitter-approved customizable features make up the Formula RS 105 W's design including an extended toe box for toe articulation, a race balanced stance that allows women to be more centered, and a 100-mm last. The shell has an adjustable flex of 115 to 105, HEAD's Women's double adjustment cuff alignment and four micro-adjustable low profile buckles. The 3D Formula liner has heel and ankle supporting Liquid Fit and a 35mm Velcro strap for a snug, supportive wrap.