A boot and binding allows step-in attachment to a snowboard while supporting the ankle of the user and allowing desired flexibility. The sole includes binding-receiving elements for attaching the boot to the binding on the snowboard. The sole also has toe and heel ends. The sole is formed with a heel counter at the heel end. Tread projects from the sole for traction when the boot is not attached to the snowboard. The strut extends upwardly from the heel counter of the base. The strut extends upwardly from the heel counter of the base. The strut provides aft support to the wearer. The upper is fixedly attached to the sole and is arranged and configured to receive the foot and ankle of the user. The upper has a rearward side adjacent the strut. The upper is more flexible than the strut and the highback. The binding disclosed includes a plate for attachment to the snowboard, a first coupling member to secure the forward end of the boot, and a second coupling member to secure the rearward end of the boot. The coupling members are releasably secured to the boot with at least one arm that extends from the side of the plate. The coupling member that secures the forward end of the boot may include either a set of jaws, a simple hook, or ridges on the sides of the toe portion.