Smartwool Men's PhD® Outdoor Ultra Light Mini 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.
New 4-Degree Fit System For All Day Performance Fit, uses two elastics for greater stretch and recovery to keep the sock in place
Patent pending Relia Wool Technology in high impact areas provides the longer lasting protection to keep feet comfortable
Strategically placed mesh ventilation zones provide ventilation for temperature and moisture management
Low profile and durable virtually seamless toe
Alternating 1x1 welt
3.75" overall height