Ski boot guides
Ski boot liner replacement
A new liner can bring a boot you like back to life, or be money spent on the wrong problem. Here is how to tell which, what it costs, and what happens when you bring your own boots in.
The liner is the soft boot inside the plastic shell. It holds your foot, fills the space between your foot and the shell, and keeps you warm. A stock liner is built for an average foot in that size, and it compresses as you ski. After enough days it packs out: the padding thins, the heel pocket loosens, and a boot that held your foot on day one starts to let it move.
Replacing the liner fixes that, as long as the shell still fits your foot. This guide covers how to tell a packed-out liner from a boot that never fit, what a new liner can and can't fix, what it costs, and how a custom liner is molded to your foot inside the boots you already own.
Is it worth replacing ski boot liners?
Usually yes, when the shell is still right for your foot. If the boot was comfortable and held your heel when it was new, and the problems crept in over seasons, the liner is the likely cause and a new one is the fix. Heel lift that gets worse each year, a foot that slides forward, and cold toes from buckles cranked down to hold on are the signs of a liner that has packed out.
If the boot never fit, a new liner won't save it. Toes that jammed from the first day, a shell that is too long, or pressure on one bone that was there from the first run are shell problems, and the fix is a different shell. The fit guide explains why a boot can feel loose for two opposite reasons, and a fitter tells them apart with the liner out of the shell.
Packed-out liner, or a boot that never fit?
The same symptom can point at the liner or at the shell. What tells them apart is usually when it started.
| What you notice | Points to the liner when | Points to the shell when |
|---|---|---|
| Heel lift | it has crept in over seasons | it was there from the first day |
| Toes jammed when you flex | the heel is no longer held, so the foot slides forward | the boot was short, or the toes jammed from new |
| Cold toes | the buckles get cranked tighter every season to hold the foot | the boot has always needed cranking, or presses over the instep |
| Pressure on one bone | rarely: a packed-out liner loosens rather than presses | the shell presses there, which is shell work |
| Foot moves side to side | the liner has compressed around the forefoot | the shell is too wide for your foot |
| The boots are many seasons old | the shell is still sound and still fits your foot, and only the liner has worn | the shell has worn and the plastic and buckles have broken down: time for new boots, not a new liner |
The liner types guide covers the other kinds of liner and what each can fix.
What a new liner can and can't fix
A new liner works on volume, the space between your foot and the shell. It can fill the gaps at the heel and ankle that a packed-out liner leaves, hold the heel down again and stop the foot sliding, which often ends the cold toes that come from cranked buckles. A custom liner molded to your foot does this more closely than a stock one, because it takes its shape from your foot inside that shell.
It can't change the shell. A shell that is too long stays too long whatever goes inside it, and a shell that presses on a bone needs shell work, not a thicker liner. Nor does a liner do the job of a footbed: a custom orthotic under the liner supports your foot in a neutral position so the liner holds it where it belongs.
How much does it cost to replace ski boot liners?
At Surefoot, custom liners are $515 a pair, injected and molded to your foot in store at any of our 29 locations. All four current models, the X 100, X 98, C 102 and R 92, are the same price.
What changes the total is anything else the boot needs. If your fitter finds the shell needs work, or you add a custom orthotic or Winterheat ski boot heaters, that is quoted in store before anything is built.
New liners in the boots you already own
Bring the boots you want to keep. Our liners work with all brands and models of ski boots, so you do not need a new shell from us to get a custom liner.
Your liner is injected with a proprietary memory compound while you stand in the boot and molded to your foot in about five minutes, then your fitter fine-tunes the fit before you leave, all in one visit. Every liner we fit has a heating element built in, so you can add Winterheat ski boot heaters at the fitting or any time after.
Bring your boots into any of our 29 locations for adjustments, for the lifetime of your boots, and if adjustments aren't getting there, we can re-inject the liner under our Absolute Fit Guarantee. This guarantee does not cover the natural breakdown of materials over extended time and use.
Fitted in store
Bring the boots you want to keep
Pick a store and a time, or walk in. Your new liner is molded to your foot in store, and your boots go home with you the same day.
Questions
Can you replace the liners in ski boots?
Yes. The liner comes out of an alpine ski boot, and Surefoot liners work with all brands and models, so you can keep the shell you have. A custom liner is molded to your foot inside that shell in one visit.
How much does it cost to replace ski boot liners?
At Surefoot, custom liners are $515 a pair, injected and molded to your foot in store at any of our 29 locations. All four models are the same price. Anything else the boot needs is quoted in store before anything is built.
How long do ski boot liners last?
It depends on how many days you ski, how hard, and the type of liner, so there is no single number. The signs tell you when a stock liner has packed out: heel lift that has crept in, a foot that slides forward, and buckles cranked tighter every season.
Is it worth replacing ski boot liners?
When the shell still fits your foot, usually yes: a new liner restores the hold a packed-out liner has lost. When the boot never fit, no: that is a shell problem, and a new liner can't fix it.
Are 20-year-old ski boots OK?
Usually they are due for an upgrade. After that many seasons the shell has worn, the plastic and buckles break down and the boot loses the strength it had, so new boots are the better fix than a new liner. A new liner makes sense when the shell is still sound and still fits your foot.
Do new ski boot liners need breaking in?
A custom liner molded to your foot in store has no break-in. It takes its shape at the fitting rather than over a season of skiing.
Can I put heated liners in my old ski boots?
Yes. Every liner Surefoot fits has a heating element built in, so a new custom liner makes your boots ready for Winterheat ski boot heaters, at the fitting or any time after. Winterheat can also be fitted to other boots in about 20 minutes in store.
Keep browsing
Ski boot guides
Ski boot liners: the four types
Stock, heat-moldable, injected and cork, and what each can fix.
Custom liners
Surefoot custom liners
Four models, molded to your foot in store, $515 a pair.
Ski boot guides
How should ski boots fit?
Toes, heel, forefoot, instep and calf, and what a fitter checks.