Do Your Ski Boots Need Insoles?
Your feet hurt after three runs. Your arches feel like they're on fire. You're wondering if those $200 custom footbeds the boot fitter keeps pushing are actually necessary or just an upsell. Here's the truth: alpine ski boots come with basic liners that work fine for some skiers but cause real problems for others. The difference comes down to how much your arch collapses under pressure, and most people have no idea where they fall on that spectrum. What Happens to Your Feet Inside Ski Boots? When you buckle into ski boots, you're putting your feet under intense pressure. The hard plastic shell doesn't bend, so your foot has to adapt to the boot's shape instead of the other way around. Your arch bears most of your body weight when you're standing normally. Add skiing forces—turns, moguls, landings—and that pressure multiplies. Studies on skiing biomechanics show that forces on your feet can reach 3-4 times your body weight during aggressive turns. If your a...