Abstract: A binding for a ski has a toe end and a heel end. An instep portion secures the instep of a skier's foot. A heel portion secures the heel of the skier's foot. The instep portion and the heel portion are connected to the ski and a foot opening is provided between the instep portion and the heel portion. A mechanism is provided for permitting the binding to move away from the ski near the foot opening to increase the size of the foot opening so the skier's foot can be inserted easily into the binding, and for permitting the binding to be flattened against the ski after the foot is inserted so the foot is firmly held within the binding for skiing.