ski boot

Rigid boot made of plastic or composite materials; the front and back of the ski boot attach to the ski.

lower shell

Part of the ski boot that covers the foot and the ankle.

hinge

Piece connecting the upper and lower shells.

upper shell

Part of the ski boot that covers the lower leg; its forward inclination is often adjustable, which makes it easier for the skier to lean forward.

buckle

Clip made up of a metal ring that fits into an adjusting catch to tighten the ski boot.

upper

Reinforcement at the back of the boot.

upper cuff

Relatively rigid piece that goes around the top of the inner boot.

sole

Sturdy piece that forms the bottom of the ski boot; it has molds at the heel and toe that fit into the binding.

adjusting catch

Groove in which the buckle latches; each adjusting catch corresponds to a different tightness.

upper strap

Strap that is attached to the upper to tighten the upper cuff.

tongue

Piece that extends from the inner boot and protects the foot from rubbing against the binding system; it is raised to slip the foot into the inner boot.

inner boot

Often removable padded lining designed to keep the feet warm and to provide comfort.