Darn Tough Size Chart


Sock Sizing Chart

We offer uncompromised comfort, durability, and fit. The following sock size guide will help you find your perfect pair. Or this quiz.

Men's / Unisex Size Chart

Sock Size Men US Women US* Euro UK
XS 2.5-5 4.5-7 35-37.5 2.5-4.5
S 5.57.5 7.5-9.5 38-40.5 5-7
M 8-9.5 10-11.5 41-42.5 7.5-9
L 10-12 12-14 43-45.5 9.5-11.5
XL 12.5-14.5 46-49.5 12-14
XXL 15-17 50-53 15-16

Women's Size Chart

Sock Size Women US Men US* Euro UK
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

*Our men's-sized socks tend to reach a bit higher on the leg compared to the women's sock heights of the same name. Just FYI.

Kids' Size Chart

Sock Size Kids' US Euro UK
S 9-11.5 26.5-29.5 8.5-11
M 12-2.5 30-34.5 11.5-2
L 3-6 35-39 2.5-5.5

Sock Height

Sock heights are relatively universal. We admit we invented Micro Crew on our own. These visuals will help with the general idea of where a sock reaches, and the measurements chart will help with specifics.




Sock Height by Inches

We measure from the heel to the cuff of the sock. A ruler or measuring tape can help you determine where the sock will reach on your leg.

Sock Height Men / Unisex Women Kids
No Show Hidden / No Show Invisible 2" 1.75"
No Show Socks / No Show Tab 3.5" 2.75"
1/4 (Quarter) Socks 5.5" 5.5" 4"
Shorty Socks 5.75"
Micro Crew Socks 8.5" 7.5" 6"
Crew Socks 10.5" 8.5" 7.5"
Boot Socks 11" 10.5"
Mid-Calf Socks 12" 12"
Over-the-Calf / Knee High Socks 17" 16.25" 13"

Sock Cushion

Cushion is a padding within the sock created by knit terry loops. The cushioning provides added protection in high impact areas, shock absorption, and extra warmth and comfort.

  1. No Cushion Socks: A thin knit with no lift from terry loops in the socks. Regardless of yarn weight, this is a thin sock.
  2. Cushion Socks: Terry loops underfoot and other areas of the sock, but does not wrap the foot. Our most popular, versatile cushion style.
  3. Full Cushion Socks: The terry loops run the entire length of the sock, or at least up to the cuff, for a full wrap of cushion around the foot and leg.

A few of our Ski & Snowboard socks feature targeted cushioning in the shin that is separate from the foot. In our Work socks category, we also carry socks specifically for steel-toe footwear with extended cushioning in the toe.

Sock Weight

Yarn comes in weights, and while measured in microns, it can make a difference. What you might consider outdoor socks are midweight and higher. For categories like our running socks, skiing socks, and casual socks, ultra-lightweight and lightweight are standard.
  1. Ultra-lightweight Socks: The absolute lowest profile that is nearly a second skin. Even with cushion, these socks are sleek and silky smooth.
  2. Lightweight Socks: The most versatile weight found in practically every sock category. When accompanied with cushion, it is considered the most sublime combination we knit.
  3. Midweight Socks: With the outdoors in mind, this is where our hiking socks and ski socks made their name. More natural insulation, and so durable they are a thru-hiker staple.
  4. Heavyweight Socks: Our warmest socks. Always with cushion, if not a full cushion of terry loops, these usually have the highest Merino Wool content of any styles with maximum Merino benefits.


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