Unisex Ski Zero Cushion Over-The-Calf Socks-Socks & Underwear-Smartwool-Winter Moss-Mountain Sports
Smartwool

Unisex Ski Zero Cushion Over-The-Calf Socks

Smartwool's thinnest ski sock, named Best Zero Cushion Ski Socks by GearJunkie for 2025–2026.

$30
Color: Light Gray
Also inWomen's
Size:
Size guide
  • Free shipping on orders $150+
  • Free pickup at our Arlington, TX store today
  • Free 30-day returns
Top features
Merino wool blend
Zero cushion
Indestructawool™ durability
Description

No cushion. All performance. Our thinnest Merino wool ski socks are the perfect pairing for your tight-fitting ski boots and still offer you the all-day comfort you need to stay out longer. Featuring our most loved sock technologies for an enhanced fit and durability, our Ski Zero Cushion Over-The-Calf Socks are everything you need to help take care of your feet and stay focused on the runs ahead.

Perfect for
Ski and ride
Over-the-calf.
Cold days out
Zero cushion.
Indestructawool™
Reinforced wear zones.
Features
  • Merino wool blend. 55% Merino carries the warmth, the moisture management and the odor resistance; the nylon and elastane carry the durability and the shape. Full blend: 55% Merino wool, 41% recycled nylon, 4% elastane.
  • Zero cushion. No cushioning anywhere — a slim, breathable barrier between foot and boot, for skiers who want the boot's fit and nothing between them and it.
  • Indestructawool™ durability. Extra yarn is knit into the high-impact wear zones — heel, toe and the shin where a boot buckle sits — so the sock wears out where it is thickest rather than where it is thinnest.
  • 4 Degree™ Elite Fit System. Two elastics pull the sock in at the arch and the ankle, and mesh zones sit where the foot vents. It is what stops a sock creeping down inside a boot and blistering you.
  • Shred Shield™ toe protection. Additional reinforcement at the toe box, where a stiff ski boot shell does the most damage to a sock.
Size & Fit

Smartwool sock sizes run off shoe size — check the Smartwool sock chart on this page. Offered in S, M, L, XL, XXL. Over-the-calf height finishes above a ski or snowboard boot cuff rather than under it.

Open size guide
Materials
  • 55% Merino wool.
  • 41% recycled nylon.
  • 4% elastane.
  • Care: Machine wash cold on gentle cycle with like colors; do not bleach; tumble dry low or lay flat to dry; do not iron; do not dry clean.
About the brand

Smartwool brings the magic of merino wool to life — keeping you warm, dry, and comfortable no matter the season. From performance socks to base layers, every piece is designed for adventure. At Mountain Sports, we love Smartwool because it proves comfort and sustainability can go hand in hand, from trail to town.

Shop all Smartwool

SKU SW001915-039 · Style SW001915
Size guide

Smartwool Size Chart - Socks

Smartwool Sizing Chart

Sock sizes are based on your everyday U.S. shoe size.

Socks (Men's & Women's):

Size U.S. Men's Shoe Size U.S. Women's Shoe Size Euro Shoe Size UK Shoe Size
S 3 - 5.5 4 - 6.5 34 - 37 2 - 4.5
M 6 - 8.5 7 - 9.5 38 - 41 5 - 7.5
L 9 - 11.5 10 - 12.5 42 - 45 8 - 10.5
XL 12 - 14.5 N/A 46 - 49 11 - 13.5
XXL 15 - 17.5 N/A 50 - 53 14 - 16.5

Kids' Socks:

Size U.S. Shoe Size Euro Shoe Size UK Shoe Size
XS 6 - 8.5 22 - 25 5 - 7.5
S 9 - 11.5 26 - 28 8 - 10.5
M 12 - 2.5 29 - 32 11 - 13.5
L 3 - 6 33 - 36 1 - 4.5

Kids' sock sizes follow kids' shoe sizing, which starts over after size 13.5 - so size M covers 12 through 2.5, and size L covers 3 through 6.

Smartwool socks run true to size, based on your total foot length - and calf circumference for compression socks. Smartwool socks are designed to retain their fit and shape; following the care instructions on the label will help avoid shrinking or stretching.
Performance

How it ranks across conditions.

Calibrated against comparable products we stock, so you can compare like for like.

Cushion

Zero
Light
Medium
Full

Non-cushioned and slim fit for less bulk and enhanced comfort, providing a breathable barrier between your foot and boot.

Warmth

Light
Moderate
Warm
Very warm

55% Merino at 65 g (2.29 oz) over the calf. A thin sock is the cooler choice — warmth here comes from the wool, not from loft.

Durability

Standard
Reinforced
High
Maximum

Indestructawool™ reinforcement is knit into the heel, toe and shin — the three places a ski boot destroys a sock. Shred Shield™ adds further protection at the toe box.

Bulk in the boot

Minimal
Low
Moderate
High

Nothing between the foot and the boot but a knit barrier — the choice when a boot is fitted precisely.

Best for

Is this right for you?

Resort ski and snowboard days

Over-the-calf height finishes above the boot cuff, so no sock edge is trapped between a hard shell and the shin.

Not for: There is no padding here at all. If your boot rubs anywhere, cushioning will help more than a thinner sock. Try the Ski Full Cushion socks

Touring and long days out

A thin Merino sock breathes best on the climb, which is where a touring day actually generates heat.

Not for: On a cold, static day — a lift-served day in January — a zero-cushion sock will feel thin. Add the Thermal Merino Reversible Neck Gaiter

Winter boots and cold days

Over-the-calf Merino works just as well inside a winter boot as a ski boot, and it goes several days between washes.

Not for: Over-the-calf height is deliberate and tall — it is not a sock for shoes. Add the Unisex Merino Gloves

Full spec sheet

Technical Specs

Material55% Merino wool, 41% recycled nylon, 4% elastane
CushionZero — Non-cushioned and slim fit for less bulk and enhanced comfort, providing a breathable barrier between your foot and boot.
HeightOver-the-calf
TechnologiesIndestructawool™ durability, 4 Degree™ Elite Fit System, Shred Shield™ toe protection
Garment weight65 g (2.29 oz)
SizesS, M, L, XL, XXL
Country of originMade in the USA of imported yarn
Style numberSW001915
Questions, answered

Before you buy.

Pulled from chats, emails and store visits. The things people actually ask us before they buy. Don't see yours?

Ask a question
How do I pick a sock size?

Smartwool sock sizes run off shoe size, not foot length in inches. The Smartwool sock chart on this page maps each size to US, Euro and UK shoe sizes. This style is offered in S, M, L, XL, XXL.

What does zero cushion mean?

Smartwool's own definition for this style: “Non-cushioned and slim fit for less bulk and enhanced comfort, providing a breathable barrier between your foot and boot.” No cushioning anywhere — a slim, breathable barrier between foot and boot, for skiers who want the boot's fit and nothing between them and it.

Can I wear these more than once between washes?

Yes — that is one of the practical reasons to ski in wool. Merino resists odor build-up, so a pair aired out overnight is fine for a second and often a third day. Wash them when they are actually dirty.

Will they shrink?

Not if you follow the label. Machine wash on a gentle cycle in warm or cool water and tumble dry low. High heat is what shrinks and felts a wool sock — a hot dryer will do more damage than a season of skiing.

What is Indestructawool™?

Extra yarn knit into the heel, toe and shin — the zones a ski boot wears through first. It is construction rather than a coating, so it does not wash out.

Real people, always

Our story

Someone who's been there

Ask about a trail, a tent or a fit, and a person who uses the gear writes back.

Picked, not just stocked

We carry the brands we trust on our own weekends outside.

Easy if it's not right

Free 30-day returns, and help finding the one that is.

Free shipping over $150

Shipped nationwide since '96. Some exclusions apply.