The 3 Feet High Arch will support your high arched feet to keep your feet warmer, improve your balance, and give you more control over your skis. Skiers with tall arches need to support their foot and fill in the large space in ski boots. A large amount of foam padding will give you some cushion, and an aluminum film will provide you with some insulation. Adding an aftermarket footbed will be the single easiest way for you to improve your skiing. Features: Aluminum Film Insulation