Elevate sensations and turn up the speed with a performance core Designed in collaboration with Salomon's Fast Collective, S/MAX boots are a radical new way of building boots. Coreframe construction uses a thinner shell with an internal frame reinforecment, making S/MAX lighter, more agile, and more sensitive than anything out there. You'll feel your edges and terrain variations like never before. And the fit is completely customizable, with a pre-shaped seamless liner, Poly-Urethane and Kaprolene Lower Shell Material and new CUSTOM SHELL HD molding process in just ten minutes.The new Coreframe construction uses a thinner walled Sensitive Shell, reinforced with a Xecarb Coreframe, to deliver both improved terrain feedback and power transmission to the edges. Sensitive Shell technology offers unprecedented snow-feel, and Sense Amplifier with 2 position strap let you select your level of power and rebound.