- Indestructawool technology
- 4 Degree Elite fit system with flex zone at ankle joint
- Body mapped mesh zones
- Virtually Seamless toe
- Achilles strap provides extra protection and warmth
- Premium yarn construction
The Smartwool PhD Pro Medium Crew Socks are built using Indestructawool technology for the ultimate durability. The 4 Degree Elite fit system keeps the socks in place during your next adventure. Body mapped mesh zones, Virtually Seamless toe and achilles strap will keep your feet dry, comfortable and warm all day. 49% merino wool, 43% nylon, 8% elastane.