Men’s PHD Outdoor Medium Crew

With Smartwool’s Men’s PHD Outdoor Medium Crew, excellence comes as standard. Smartwool’s PhD Outdoor Medium features ReliawoolAazA Technology for improved durability in the high wear areas and the 4-Degree Elite Fit System, to keep the sock in place and giving you all-sport versatility.PhDAABuilt for Performance in the Highest Degree4 Degree Elite Fit SystemUses two elastics for greater stretch and recovery to keep the sock in placeReliaWoolAazAPatented ReliaWoolAazA technology in high impact areas provides superior durabilityMedium CushionMedium cushioning to absorb impact on the trail.