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We want you to be 100% satisfied and comfortable with your Smartwool purchase. Our sock, clothing, and accessories size charts are specifically designed to help you find the best fit for men’s, women’s, and kids’ Smartwool products.

 

Men's Smartwool Socks Size Chart


Size U.S. Men's Shoe Size Euro Shoe Size UK Shoe Size Calf Circumference (Largest part of the calf)
S 3-5.5 34-47 2-4.5 11"-14.5" (18-26.5 cm)
M 6-8.5 38-41 5-7.5 12.5"-16.5" (32-41 cm)
L 9-11.5 42-45 8-10.5 14.5"-18" (37-45.5 cm)
XL 12-14.5 46-49 11-13.5 16"-23" (41-58 cm)

*Compression Calf Sleeves fit the same calf circumference as corresponding sock sizing.





Women's Smartwool Socks Size Chart


Size U.S. Women's Shoe Size Euro Shoe Size UK Shoe Size Calf Circumference (Largest part of the calf)
S 4-6.5 34-47 2-4.5 11"-14.5" (18-26.5 cm)
M 7-9.5 38-41 5-7.5 12.5"-16.5" (32-41 cm)
L 10-12.5 42-45 8-10.5 14.5"-18" (37-45.5 cm)
XL N/A 46-49 11-13.5 16"-23" (41-58 cm)

*Compression Calf Sleeves fit the same calf circumference as corresponding sock sizing.





Kids' Smartwool Socks Size Chart


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



 

Frequently Asked Questions on Sock Sizing

 

Do Smartwool socks run big, small, or true to size?
Smartwool socks run true to size, based on your total foot length (and calf circumference, for compression socks). Refer to the sock size charts above to identify which size is right for you.

How do I know what size is right for me?
With proper foot length (and calf circumference, when applicable), you can reference the above Smartwool socks size chart to ensure the right size. If you have specific questions about size and fit, feel free to contact us.

Will Smartwool socks shrink or stretch?
Not with proper care. Smartwool’s high-quality wool sock construction methods help your socks retain their shape and fit.

Does Smartwool provide sock repairs?
We don’t have a repair service, but if you’re not completely satisfied with your socks, you have two years to return them. See the details of the Smartwool satisfaction guarantee to see if we can help you.

What if a pair of socks I order doesn’t fit?
We’ve got your back--er, feet! With our 100% Satisfaction Guarantee, you can be assured an exchange or refund for your socks. Visit our Free Return Policy for more details.

 

Men's Smartwool Apparel Size Chart


Size Chest Waist Hip Arm Length Inseam
S 36"-38"
91.5-96.5cm
29"-31"
73.5-78.5cm
36"-38"
89-96.5cm
31"-32"
68.5-81.5cm
30"-31"
73.5-78.5cm
M 39"-41"
99-104cm
32"-34"
81.5-86.5cm
39"-41"
99-104cm
32"-33"
81.5-84cm
31"-32"
78.5-81.5cm
L 42"-44"
106.5-112cm
35"-37"
89-94cm
42"-44"
106.5-112cm
33"-34"
84-86.5cm
32"-33"
81.5-84cm
XL 45"-48"
114.5-122cm
38"-40"
96.5-101.5cm
45"-48"
114.5-122cm
34"-35"
86.5-89cm
33"-34"
84-86.5cm
XXL 49"-51"
124.5-129.5cm
41"-44"
104-112cm
49"-51"
124.5-129.5cm
35"-36"
89-91.5cm
34"-35"
86.5-89cm
How to Measure Measure under the arms, around fullest part of chest and back circumference. Measure around natural waistline, keeping tape a bit loose. Measure around the fullest part of hip circumference, parallel to the floor. With elbow bent slightly, measure frocm center back of neck, across top of shoulder, to elbow and down to wrist bone. Measure along inside leg from crotch to ankle bone. Or measure a good fitting base layer pant from crotch seam to bottom along seam.





Women's Smartwool Apparel Size Chart


Size Chest Waist High Hip Hip Arm Length Inseam
XS
2
32"-33"
81.5-84cm
24"-25"
61-63.5cm
31"-32"
78.5-81.5cm
35"-36"
81-91.5cm
27"-28"
68.5-71cm
29"-30"
73.5-76cm
S
4-6
34"-35"
86.5-89cm
26"-27"
66-68.5cm
33"-34"
84-86.5cm
37"-38"
94-96.5cm
28"-29"
71-73.5cm
30"-31"
76-78.5cm
M
8-10
36"-38"
91.5-96.5cm
28"-30"
71-76cm
35"-36"
89-91.5cm
39"-40"
99-101.5cm
29"-30"
73.5-76cm
31"-32"
78.5-81.5cm
L
12-14
39"-40"
99-101.5cm
31"-32"
78.5-81.5cm
37"-38"
94-96.5cm
41"-42"
104-106.5cm
30"-31"
76-78.5cm
32"-33"
81.5-84cm
XL
16
41"-42"
104-106.5cm
33"-34"
84-86.5cm
39"-40"
99-101.5cm
43"-44"
109-112cm
31"-32"
78.5-81.5cm
33"-34"
84-86.5cm
How to Measure Measure under the arms, around fullest part of chest and back circumference. Measure around natural waistline, keeping tape a bit loose. Measure around high hip circumference approximately 3" below natural waistline. Measure around the fullest part of hip circumference, parallel to the floor. With elbow bent slightly, measure from center back of neck, across top of shoulder, to elbow and down to wrist bone. Measure along inside leg from crotch to ankle bone. Or measure a good fitting base layer pant from crotch seam to bottom along seam.





Women's Smartwool Seamless Bra Size Chart


Size Comparable Bra Size Recommended Impact
XS 30A, 30B, 30C, 32A, 32B A, B - Medium Impact C - Low Impact
S 32A, 32B, 32C, 34A, 34B A, B - Medium Impact C - Low Impact
M 34A, 34B, 34C, 36A, 36B A, B - Medium Impact C - Low Impact
L 36A, 36B, 36C, 38A, 38B A, B - Medium Impact C - Low Impact
XL 38A, 38B, 38C A, B - Medium Impact C - Low Impact




Kid's Smartwool Apparel Size Chart


Size Age Chest Waist Height Weight
XS 4-5 24"-25"
61-63.5cm
22"-22.5"
56-57cm
42"-48"
106.5-122cm
42-49 lbs
S 6-8 22.5"-26.5"
57-67.5cm
23"-24"
58.5-61cm
48"-54"
122-137cm
49-59 lbs
M 9-10 27"-28"
68.5-71cm
24.5"-25"
62-63.5cm
54"-57"
137-145cm
59-75 lbs
L 11-12 28.5"-30"
72.5-76cm
25.5"-26"
65-66cm
57"-60"
145-152.5cm
75-89 lbs
XL 13-14 30.5"-32"
77.5-81cm
26.8"-28"
67.5-71cm
60"-62"
152.5-157.5cm
89-100 lbs



 

Frequently Asked Questions on Clothing Sizing

 

Does Smartwool clothing run true to size?
Yes. Refer to the clothing size charts above to identify which size is right for you based on your body measurements.

How do I know what size is right for me?
Taking proper measurements and referencing the applicable Smartwool size chart will enable you to identify the best fit. If you have specific questions about size and fit, feel free to contact us.

Does Smartwool carry petite and big/tall sizes?
Smartwool offers standard sizes for men (S-XXL), women (XS-XL), and kids (XS-XL). We do not officially offer petite or big/tall sizes. Refer to the clothing size charts above to identify which size is right for you.

Will Smartwool clothing shrink or stretch?
With the proper care, detailed on each specific product page, your Smartwool clothes should retain their original fit throughout their normal lifecycle. Visit our care page for details on how to care for your wool socks and clothing.

Does Smartwool provide alterations?
We don’t provide alterations. We are confident our standard sizes will provide a satisfactory fit. If you have specific questions about size and fit, feel free to contact us.

What if the size I order does not fit--or I got the wrong color?
No worries! Our 100% Satisfaction Guarantee ensures you’ll receive an exchange or refund. Check out our Free Return Policy for details.

 

Smartwool Hat Size Chart


Size Head Circumference
Adult - One Size Fits Most (1SFM) 21.5"-12"
55-60 cm
Kids L/XL 21.5"-22"
54.5-56 cm
Kids S/M 20.5"-21"
52-53.5 cm
Baby 12-24 Months 19"-20.5"
48-52 cm
Baby 6-12 Months 17"-18.5"
43-47 cm




Smartwool Gloves Size Chart


Size Hand Size
XS 6"-6.5"
15-16.5 cm
S 7"-7.5"
18-19 cm
M 8"-8.5"
20-21.5 cm
L 9"-9.5"
23-24 cm
XL 10"-10.5"
25-27 cm

 

Frequently Asked Questions on Accessories Sizing

 

Do Smartwool hats and gloves run big, small, or true to size?
True to size. Apply proper measurement of your head circumference and hand size to the applicable size chart above to choose the best size.

How do I know what size is right for me?
Smartwool hats and gloves come in standard sizes, helping to minimize size issues. With the proper measurements and applicable Smartwool size chart, you can be confident in your size selection. But if you’re still wondering, feel free to contact us.

Will Smartwool hats and gloves shrink or stretch?
Because Smartwool products are designed to retain their fit and shape, proper care and maintenance will help avoid shrinking or stretching. You can see details about how to care for your Smartwool products on our wool care page.

Does Smartwool provide alterations?
No. And with our standard-sized wool hats and gloves, the need for alterations is rare.

What if I don’t like the size, color, or style?
We understand. That’s why we offer a Free Return Policy and 100% Satisfaction Guarantee--to ensure you get the wool hat or gloves you want and love.

 

Yes, you read that correctly: Free Return Policy. We want you to be 100% satisfied and comfortable with your Smartwool purchase. With Smartwool’s 100% Satisfaction Guarantee, you’ll receive an exchange or refund on your unworn Smartwool socks, clothing, and accessories.