Fitted with BOA® Zonal Fit System, which is a dial-activated fit system that allows for a precise closure in two zones, the Karmyn Zonal will fit perfectly the first time you slip your foot into it. Rides liner integrated Tongue Tied™ Hybrid Harness, closes the liner lace harness and Tongue Tied™ system assuring an optimal fit. The Impact Rubber Cupsole with Ride Fusion Rubber uses recycled premium rubber and +Slime Midsole for traction and cushioning. C.A.T. technology allows for a custom fit in the calf zone for increased comfort. The Karmyn Zonal is designed as a medium flexing freestyle snowboard boot for every rider out there.