- Indestructawool technology
- 4 Degree Elite fit system with flex zone at ankle joint
- Virtually Seamless toe
- Achilles strap provides extra protection and warmth
- Ventilation channels in the body of the sock provides breathability
The Smartwool PhD Pro Wader Over-the-Calf 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. Ventilation channels, Virtually Seamless toe and achilles strap will keep your feet dry, comfortable and warm all day. 76% merino wool, 23% nylon, 1% elastane.