Women's RFL Over-the-Calf Ultra-Lightweight Ski & Snowboard Sock

An ultra-lightweight Merino wool over-the-calf sock built for ski and snowboard days and Guaranteed for Life.

$31

Color: Lavender

Also inMen's

Size:

Size guide

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Top features

Merino wool blend

True Seamless™ Toe

Performance fit

Description

The RFL focuses on the important stuff: durability, breathable warmth, and ultra-lightweight fit. It's the spot-on choice for serious skiers and riders. This go-to women's Snow sock features a reinforced heel that strengthens the sock without needing a dip in the river Styx.

Perfect for

Ski and ride

Over-the-Calf.

Cold-weather Merino

Warm and breathable.

Guaranteed for Life

Reinforced, lifetime-backed.

Features

Merino wool blend. Fine Merino wool manages temperature, wicks moisture and resists odor; nylon and Lycra Spandex add durability and stretch. Blend: 40% Merino Wool, 56% Nylon, 4% Lycra Spandex.
True Seamless™ Toe. Every toe seam is closed for an ultra-smooth, undetectable feel with no bulk against the foot.
Performance fit. A fine-gauge knit with strategic elasticity locks the sock in place — no slipping, no bunching, run after run.
Ultra-light breathable knit. A thin, next-to-skin knit with targeted venting keeps feet cool and connected to the boot.
Guaranteed for Life. Still knit in Northfield, Vermont, USA and backed by Darn Tough's unconditional lifetime guarantee.

Size & Fit

Darn Tough socks are sized off your shoe size — use the Darn Tough sock chart on this page. This style runs true to size with a snug performance fit; over-the-calf height.

Open size guide

Materials

40% Merino Wool.
56% Nylon.
4% Lycra Spandex.
Care: machine wash cold on gentle cycle inside-out; do not bleach; tumble dry low or hang dry; do not dry-clean.

SKU 8008-LAV · Style 8008

Size guide

Darn Tough Size Chart - Socks

Darn Tough Sizing Chart

Sock sizes are based on your everyday shoe size. Each sock size fits about 2 to 3 shoe sizes. If you fall between two sizes, size up.

Men's & Unisex Socks:

Size	U.S. Men's Shoe Size	U.S. Women's Shoe Size	Euro Shoe Size	UK Shoe Size
XS	2.5 - 5	4.5 - 7	35 - 38	2.5 - 4.5
S	5.5 - 7.5	7.5 - 9.5	38 - 40	5 - 7
M	8 - 9.5	10 - 11.5	41 - 42	7.5 - 9
L	10 - 12	12 - 14	43 - 45	9.5 - 11.5
XL	12.5 - 14.5	N/A	46 - 49	12 - 14
XXL	15 - 17	N/A	50 - 53	15 - 16

Women's Socks:

Size	U.S. Women's Shoe Size	U.S. Men's Shoe Size	Euro Shoe Size	UK Shoe Size
S	4.5 - 7	2.5 - 5	35 - 37.5	2.5 - 4.5
M	7.5 - 9.5	5.5 - 7.5	38 - 40.5	5 - 7
L	10 - 11.5	8 - 9.5	41 - 42.5	7.5 - 9
XL	12 - 14	10 - 12	43 - 45	9.5 - 11.5

XL is only available in select women's styles.

Kids' Socks:

Size	U.S. Kids' Shoe Size	Euro Shoe Size	UK Shoe Size
S	9 - 11.5	26.5 - 29.5	8.5 - 11
M	12 - 2.5	30 - 34	11.5 - 2
L	3 - 6	35 - 38	2.5 - 5.5

Kids' shoe sizing starts over after size 13.5, so size M covers 12 through 2.5.

Men's styles sit a little higher on the leg than women's styles. Your sock size is printed inside the cuff (for example, "M"), so you can check a pair you already own.

Performance

How it ranks across conditions.

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

Cushion

None

Light

Medium

Full

A thin, no-cushion knit for a close, connected fit.

Warmth

Light

Moderate

Warm

Very warm

Ultra-Lightweight Merino wool regulates temperature on and off the hill.

Breathability

Low

Moderate

High

Very high

Merino and targeted venting move moisture and air to keep feet dry.

Durability

Standard

Reinforced

High

Maximum

Reinforced high-wear zones and a lifetime guarantee — these are built to outlast the season.

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 against the shin.

Not for: You want a thin liner for a race-tight boot fit. Shop all Darn Tough

Winter boots and cold commutes

Merino warmth and odor resistance go several days between washes, in a ski boot or a winter boot.

Not for: You need a low, no-show sock for sneakers. Shop all Darn Tough

All-season mountain wear

Merino regulates temperature, so these work well beyond the coldest days.

Not for: You run very hot and want a pure synthetic sock. Shop all Darn Tough

Full spec sheet

Technical Specs

Material	40% Merino Wool, 56% Nylon, 4% Lycra Spandex
Height	Over-the-Calf
Weight	Ultra-Lightweight
Cushion	No Cushion
Fit	Performance fit; sized off shoe size
Toe	True Seamless™ Toe
Origin	Knit in Northfield, Vermont, USA
Guarantee	Unconditional lifetime guarantee

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?

Darn Tough socks are sized off your shoe size — check the Darn Tough sock chart on this page. This style is offered in SM, MD, LG.

Will Merino wool make my feet itchy?

No. Darn Tough uses fine-gauge Merino wool, which is soft against the skin, naturally temperature-regulating and odor-resistant.

How do I wash them?

Machine wash cold on a gentle cycle with socks inside-out. Do not bleach, tumble dry low or hang dry, and do not dry-clean. Skip fabric softener, which flattens the cushion.

What is the guarantee?

Every pair is Unconditionally Guaranteed for Life. If they are not the most comfortable, best-fitting, most durable socks you have owned, return them for another pair.

Where are they made?

Darn Tough knits every sock at their mills in Northfield, Vermont, USA.

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Our story

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

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

Free shipping over $150

Shipped nationwide since '96. Some exclusions apply.