Ski binding

A ski binding is a device that connects a ski boot to the ski. Generally, it holds the boot firmly to allow the skier to maneuver the ski. However, if certain force limits are exceeded, it releases the boot to minimize skier injury, such as in the case of a fall or impact. There are different types of bindings for different types of skiing.

Alpine

Modern alpine skiing bindings fix the boot at the toe and heel.

In some bindings, to reduce injury the boot can release in case of a fall. The boot is released by the binding if a certain amount of torque is applied, usually created by the weight of a falling skier. The torque required is adjustable, according to the weight, foot size, and skiing style. A snow brake prevents the ski from moving while it is not attached to a boot.

Also known as randonee, an alpine touring binding allows the heel to be clipped down to the ski when skiing downhill, but allows it to be released when climbing.

Alpine touring

An alpine touring binding allows the skier to have the heel of the ski boot free and the toe of the ski boot in the binding when using Nordic skiing techniques for ski touring, and to have both the heel and the toe of the ski boot in the binding when using alpine skiing techniques to descend the mountain. Most touring bindings are designed for ski boots falling under one of two ISO specifications: