Sizing Philosophy

Bodies come in all shapes and sizes. And socks should too. What makes Wide Open different is that we challenge traditional sizing norms by designing socks not just for length, but for width – specifically foot width, ankle width, and leg width. That’s why we offer a full range of inclusive sizing for anyone who wants or needs wider-fitting socks.

Find Your Size

Regardless of how wide your feet are, your shoe size is a good indicator of what your Wide Open Sock size will be. Use the chart below to determine the best size for you based on your shoe size. All our socks stretch up to a 4E width.

Illustration showing sock has 17 inches of stretch in foot and ankle; 18.5 inches in the leg
Women's Size Chart
Women's Sock Sizes S M L XL
Women US 4.5 - 7 7.5 - 9.5 10 - 11.5 12 -14
Men US 2.5 - 5 5.5 - 7.5 8 - 9.5 10 -12
EU 35 - 37 38 - 40 41 - 42 43 - 45
UK 2.5 - 4.5 5 - 7 7.5 - 9 9.5 - 11.5
Illustration showing how the foot and ankle have 18 inches of stretch; the leg has 18.5 inches
Men's Size Chart
Men's Sock Sizes M L XL XXL
Men US 8 - 9.5 10 - 12 12.5 - 14.5 15 - 17
Women US 10 - 11.5 12 - 14 14.5 - 16 16.5 - 18.5
EU 41 - 42 43 - 45 45 - 47 48 - 50
UK 7.5 - 9 9.5 - 11.5 12 - 14 15 - 16

Are You Width Us?

Still unsure if our socks are wide enough? Take a minute with your measuring tape – using the measurement guide below – to obtain a more accurate reading. With your measuring tape directly against your skin, using the dotted yellow line as a guide, follow along to accurately measure your foot, ankle, and leg. Please note that if you’re between sizes, we recommend sizing up.

Illustration showing where to put the measuring tape when measuring your feet and ankles

Leg Circumference

While standing with your foot firmly on the floor, measure just below mid-calf (not the widest part of your calf).  

Ankle Circumference

Wrap the measuring tape in a complete circle around the bottom of your ankle.

Foot Circumference

Measure around the widest part of your foot between your arch and toes. 

Still Need Help?

Contact us for real-time, one-on-one sock support. If you still don’t see your size, please submit a size request form, and let us know exactly what you need.

Height Chart

What Is Wide Flex Stretch™?

Comfort without constraint in all the right places – from calf to toe. Easy on, easy off, and easy everything-in-between, that’s our Wide Flex Stretch™.

Sock Cushion

Cushion is created by knitting soft terry loops into the sock. No cushion socks (you guessed it) have no terry loops.

  • No Cushion Socks

    Thin and breathable, no cushion socks offer a low-profile feel for everyday activities.    

    Shop No Cushion 
  • Cushion Socks

    Soft and supportive, cushioned socks add comfort, warmth, and impact protection.   

    Shop Cushion 

Sock Weights

Sock weight refers to the weight of the actual yarn. Thus, the lighter the yarn, the lighter the sock.

  • Lightweight Socks

    Super fine yarn helps regulate body temperature, keeping feet light and dry.  

    Shop Lightweight 
  • Midweight Socks

    Thicker yarn naturally insulates, adding warmth, durability, and cozy comfort.

    Shop Midweight