Revolutionary WrapStrap closure integrates a power strap right into the shell, controlled via a BOA H4 Coiler. Enjoy even pressure distribution and insane response; Advanced OrthoLite X40 footbed features dual-density construction and premium cushioning that maintains its bounce, eliminating fatigue on the longest days; 3D PermaFlex tongue is injection-molded from TPU to maintain consistent flex throughout the life of the boot, delivering reliable support season after season; Awesome foot hold that starts right inside the liner, with 3D molded material and J-bars around the ankle; Premium outsole combines full EVA midsole cushioning with an OC-Kush heel insert for supreme comfort; Gold liner's advanced heat-molding tech delivers a perfect fit in minutes. Premium materials enhance flex and support, while a Custom Flex Zone adds toe room; 3D Molded Toebox eliminates extra layers and seams around the forefoot, improving water resistance and durablility; Unique asymmetrical design co-developed with BOA for optimal support and flex; Made from advanced memory foam, Nidecker moldable liners adapt to your foot shape over time or can be heated for an instant, personalized fit; Thermal insulation barrier between the outsole and the bottom of the liner keeps the warmth inside and the cold outside