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PhD: Built for Performance in the Highest Degree
4 Degree Elite Fit System: Uses two elastics for greater stretch and recovery to keep the sock in place
ReliaWool: Patented ReliaWool technology in high impact areas provides superior durability
Heavy Cushion: Heavy cushioning offering significant impact absorption for extended backcountry excursions
Strategically placed mesh ventilation zones provide ventilation for temperature and moisture management
Flat knit durable toe seam
8.5" overall height
Sock Height: Crew
Knit in USA of Imported Yarn: 71% Merino Wool, 27% Nylon, 2% Elastane
The Men’s PHD Outdoor Heavy Crew Sock by SmartWool is a new and improved classic. The socks feature ReliaWool technology for improved durability in the high wear areas and the 4 Degree elite fit system, to keep the sock in place and give you all-sport versatility.
high-quality Merino wool in all of their products. This gives them the comfort, performance and durability that you need from your socks. Merino wool is both warm and breathable, giving it exceptional performance as well as being both hardwearing and yet incredibly soft against even the most sensitive skin. The fibres reject moisture and bacteria, meaning that it stays fresh for longer; and you do too!
Openness: Smartwool builds and maintains trust through transparency about the company, its vision, and its direction.
Advocacy & Action: Smartwool believes in doing everything we can to preserve our one-of-a-kind environment, so everyone can experience the joy of the outdoors.
Inclusivity & Fun: Smartwool believes in being compassionate, actively kind, generous, and accountable to all people.