Smartwool's PhD Outdoor Ultra Light Micro features ReliaWool technology for improved durability in the heel and toe and the 4 Degree elite fit system, to keep the sock in place and giving you all-sport versatility.
4 Degree elite fit system uses two elastics for greater stretch and recovery to keep the sock in place
Patented ReliaWool technology in high impact areas increases durability
Strategically placed mesh ventilation zones
Virtually seamless toe
1.75" overall height
Height: Micro Crew
Fabric Content: 65% Merino Wool, 33% Nylon, 2% Elastane