Surefoot · Designed by professional boot fitters
Vapor Plus Ski Sock
Vapor Plus
$32.00
Ultralight over the instep, around the ankle and behind the calf, with cushioning in the heel pocket, the toe box and around the shin. Designed by professional boot fitters.
Color
Black/Black · UnisexSize
1M+Pairs of ski boots fitted
Since 1982Surefoot fitting expertise
8 zonesKnit to the inside of a ski boot
Designed by professional boot fitters
Cushioned where
the boot presses.
Vapor Plus keeps the thin Vapor fit through the instep, ankle and calf, where extra bulk costs you control, and adds cushioning around the shin, in the heel pocket and in the toe box.
Choose it if you want extra cushioning under the boot cuff. It works great with Surefoot custom ski boots.

Anatomical precision fit
Every zone has a job.
Eight knit zones, mapped to what actually happens inside a ski boot. Here's what you'll feel:
Stays up. All day.
A secure knit cuff grips below the knee.
Secure knit comfort cuffFresher legs, longer.
Graduated compression keeps blood moving all day.
Calf compression supportAn ankle that's locked in.
A support band plus fine-rib compression, right where your boot flexes.
Above-ankle band + ankle compressionA heel that stays planted.
A cushioned deep pocket locks the heel and soaks up hard landings.
Cushioned deep heel pocketNo sliding in the shell.
The arch wrap holds your midfoot still, so power goes to the edge.
Arch / instep support bandToes without blisters.
Seamless knit where the boot is tightest.
Seamless comfort toe boxA merino wool blend: merino for warmth, dryness and odor control, nylon for durability and a thin, precise fit, spandex for hold.
Choose your pair
Which Surefoot sock?
Vapor Peaks
The everyday Vapor. Ultralight, with the peaks cuff design.
- Fit
- Ultralight
- Cushioning
- Heel pocket and toe
- Sizes
- Unisex S–XL · Women's S–L
- Price
- $30.00 · 3-pack $76.50
Vapor Diamond
The same fit as Peaks, with a diamond knit pattern.
- Fit
- Ultralight, same as Peaks
- Cushioning
- Heel pocket and toe
- Sizes
- Unisex M–XL · Women's S–L
- Price
- $30.00
Vapor Plus
Adds cushioning around the shin, under the boot cuff.
- Fit
- Ultralight over instep, ankle and calf
- Cushioning
- Shin, heel pocket and toe
- Sizes
- Unisex S–XL · Women's S–L
- Price
- $32.00 · 3-pack $81.60
Kids Monster
A soft, supportive sock for young skiers.
- Fit
- Soft, supportive
- Cushioning
- Targeted cushioning
- Sizes
- Kids S–L
- Price
- $15.00
From our boot fitters
How to wear it
in a ski boot.
The sock is the first layer of your boot fit. Wear it the way our fitters do.
- One sock. Nothing else.No second pair and no liner sock. Extra layers add pressure points and cold spots.
- Pull it smooth and high.No wrinkles at the heel or instep, with the cuff above the top of the boot.
- Keep thermals out of the boot.Base layers stop above the boot cuff, so only the sock sits inside the shell.
Sizing
Find your size.
Choose your sock size by shoe size.
| Sock size | US Men's | US Women's | Mondo | EU | UK |
|---|---|---|---|---|---|
| Small | 3–5.5 | 4–6.5 | 21.5–22.5 | 34–37 | 2–4.5 |
| Medium | 6–8.5 | 7–9.5 | 23.0–25.5 | 38–41 | 5–7.5 |
| Large | 9–11.5 | 10–12.5 | 26.0–28.5 | 42–45 | 8–10.5 |
| XL | 12–14.5 | 13–15.5 | 29.0–31.5 | 46–49 | 11–13.5 |
Ski sock questions
Before you buy.
What size ski sock should I get?
Unisex and Women's styles use the same sizes, so choose by your US shoe size. Small fits US men's 3–5.5 and women's 4–6.5; Medium fits men's 6–8.5 and women's 7–9.5; Large fits men's 9–11.5 and women's 10–12.5; XL fits men's 12–14.5 and women's 13–15.5. Mondo, EU and UK sizes are in the size chart on this page.
What's the difference between Vapor Plus and Vapor Peaks?
Both are ultralight merino ski socks with the same knit zones. Vapor Plus adds cushioning around the shin, in the heel pocket and in the toe box, and keeps the thin fit over the instep, ankle and calf.
Should ski socks be thin or thick?
Thin. A precise boot fit depends on a thin, consistent layer. Bulk adds pressure points and cold spots, and a thick sock can make a well-fitted boot feel tight. The Vapor is ultralight on purpose, so the boot can hold your foot the way it was fitted.
How should I wear a ski sock in my boot?
One smooth sock, pulled up past the top of the boot, and nothing else in the shell. The fit problems we see most often come from a second sock, a sock that stops below the cuff, or thermal tights tucked into the boot. Each one adds a pressure point, a cold spot or a layer that moves.
Is there a 3-pack?
Yes. Choose 3-Pack at the top of the options, then your pack. A 3-pack costs 15% less than three single pairs, in Unisex, Men's and Women's assortments.
How do I wash them?
Machine wash cool and air dry to protect the merino and the knit structure. Follow the care label on the sock for specifics.
Complete the fit