Smartwool Women's PhD Outdoor Light Mid Crew Socks 63% Merino Wool, 35% Nylon, 2% Elastane Made in US Light Cushion: The ideal cushion for varied trail and road terrain. 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. Strategically placed mesh ventilation zones provide ventilation for temperature and moisture management Sock Height: Mid Crew - 5.5" overall height Flat knit durable toe seam Knit in USA - Style: SW0SW220 You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!