Ultra Light Cushion: Minimal cushioning for maximum next-to-foot performance without added bulk. 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.
Men's-specific mesh ventilation zones provide additional breathability and moisture management; 200 needle construction provides highest knit density while maintaining ultra light weight.
