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

Mesh Venting: Men's-specific mesh ventilation zones provide additional breathability and moisture management

Light Elite Cushioning: Maximum impact protection with targeted cushioning on the ball and heel of the foot. Designed specifically for runners.

Our best fitting, most advanced run socks yet, we packed years of testing, prototypes and running smarts into these socks. Featuring Light Elite cushioning in the ball and heel of the foot for ultimate shock absorption with minimal in-shoe volume, women's-specific mesh ventilation zones and a virtually seamless toe.

Care: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.

• 200 needle construction provides highest knit density while maintaining ultra light weight
• Virtually seamless toe - Achilles tab
• 1.5" overall height - Sock Height: Micro
• Narrower profile provides perfect women's-specific run fit.
• Style: SW0SW210 - Made in USA of Imported Yarn

200 needle construction provides highest knit density while maintaining ultra light weightSmartwool