The Smartwool PhD Outdoor Light crew is a light half-cushioned trail-running/mountain biking sock made of New Zealand Zque? Merino wool. It features WOW? (Wool On Wool) technology in high density impact zones for greater shock absorption and durability, while the 4-Degree Fit System keeps the sock in place.
- 77% Merino wool/22% Nylon/1% Elastane
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