Before you strike out on the trail, pull on the SmartWool PhD Outdoor Medium Pattern Crew Socks for supreme comfort and all-sport versatility. New Indestructawool technology allows SmartWool to specially construct these socks with stronger material in high-wear zones for unbeatable durability. The four-degree elite fit system uses two elastics for greater stretch and recovery to keep the socks in place as you move. A performance-enhancing merino wool blend keeps your feet warm while wicking away sweat, and mesh zones balance warmth with breathability. With its medium cushioning and a playful pattern, these socks help keep you comfortable and energetic on the trail.