DIY: How to Heat-Mold Your Ski Boots

Boot-fitting is an art. Great boot-fitters can really help your aching feet, and let’s face it: ski boots can be pretty uncomfortable.

But not all boot adjustments have to be done at the ski shop. Some things can be fixed with a little DIY know-how.

The SkiZer just got a new pair of K2 Spyne 110 boots and decided to heat-mold the liners himself. Turns out it’s not that hard.

Heat-moldable Intuition liners are a feature of most boots on the market. You don’t have to heat-mold your liners — they’ll eventually mold to your foot shape after use. But if you heat-mold them, you’ll get a custom fit from the start.

Here’s what you’ll need for the job:rice

  • A pair of old socks you can cut up.
  • A pair of old tube socks
  • About 4 lbs. of rice
  • A board
  • Access to a microwave

Step 1: Prepare your rice heaters

Fill your tube socks with the rice. Tie knots on the ends and place them in  a microwave oven on high for about five minutes. Less powerful microwaves may take a minute or two longer.

Step 2: Get ready

While the microwave is running, cut off the toes from a pair of old socks. These are toe-caps. Place both of them over the toes of one foot and put a ski sock on over them. You’ll heat-mold one foot at a time, but you’ll need to wear both boots during the process, so put a ski sock (without toe-caps) on your other foot. Remove the foot-bed from the liner of the boot you’ll be heat-molding.

Step 3: Heat the boot liners

After the rice is hot, take the filled tube socks and place both of them inside the boot. Buckle it, and wait 10 minutes for it to heat. While you’re waiting, put on your other boot.

Step 4: Mold the liner

Once the liner is hot (after 10 minutes), remove the rice socks, return the foot-bed to the liner and put on the warmed boot. Buckle it loosely. Stand for 10 minutes with the toes of your boots elevated on a 2″x 4″ board. If you don’t have a 2″x 4,” a couple of cutting boards stacked on top of each other work just as well. Stand for 10 minutes.

Step 5: Repeat on the other foot

Take off both boots, reheat the rice, heat the other liner, transfer the toe caps to your other foot. By this time, the steps should go a little faster. After molding your second boot, you’re all set.

All done! Your feet will thank you.

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