You can’t watch a World Cup event without seeing the distinctive flap of a Booster Strap waving from virtually every racer’s boot. Competitors from every continent have learned that using a Booster elasticized wrap at the boot cuff instead of an unforgiving Velcro strap smooths flex, increases rebound energy and improves turn precision. Park and pipe competitors use it to eliminate shin bang. Boosters help you do everything on skis with more control and consistency. Easy installation.