PhD Pro Endurance Print

by Smartwool

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Buy four socks, get one free!

For every five pairs of socks you add to your cart, one of the lowest cost pairs of socks will be free!

Browse Darn Tough Socks, Smartwool Socks, or Socksmith Socks.

$25.95

Description

We worked with athlete Rob Krar to create the ultimate ultra-run sock. This purpose-built sock features Shred Shield technology to reduce wear from toes, activity-specific minimal and targeted sole cushioning, and a new malleolus ankle cushion designed for protection on the most rugged trails. These socks were built to go as far as you want to go, with unwavering comfort and performance.

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 34-37 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)

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 34-37 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)

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