The SuperFree, with its easygoing performance and friendly 76 mm waist, is the top seller in K2's Supermodels series of frontside-oriented women's all-mountain system skis. It's a metal-free, wood-core, women's-specific K2 Bioflex2 construction, with aspen underfoot (70 percent) for strength and responsiveness and paulownia (30 percent) tip and tail for softer flex and reduced swing weight. HybriTech Sidewall construction combines a sturdy vertical sidewall underfoot for edge grip, lightweight cap fore and aft for supple flex. Available only as a system, it comes with a 10-DIN Marker/K2 ER3 binding. K2's All-Terrain Rocker combines 70 percent camber with 30 percent tip/shovel rocker to smooth the ride, enhance forgiveness and improve soft-snow flotation. Mod Technology features an independently acting secondary core, raised above the deck, to focus power transmission where needed and reduce vibrations for better edge grip and high-speed calm. Mod Monic technology features a strategically placed module to further reduce vibrations. Both Mod structures are optimized for female skiers. The pink ribbon on the base signifies K2's support (at least $75,000 annually) for the Breast Cancer Research Foundation.