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.
Indestructawool - Featuring a patent-pending construction method for exceptional durability and comfort.
Mesh Venting - Mesh ventilation zones provide optimum moisture management and maximum breathability.
Flex Zone - Located at the ankle which offers maximum flexibility.
The right gear can make or break any expedition. That's why we've created the new PhD Outdoor Mountaineer socks, our most technical mountaineering socks ever. We put some serious sock science to work in these all-mountain socks, including revolutionary Indestructawool technology for ultimate durability and the 4 Degree elite fit system for a dialed fit.
We placed high-density cushioning where you need it most, in the heel and toe, while using a flat knit on the leg to accommodate low-volume mountaineering boots. Mesh zones offer breathability, flex zones offer added comfort, and Merino helps keep feet warm, dry and comfortable.
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
Indestructawool Indestructawool technology features a patent-pending construction method for exceptional durability and comfort
Mesh Venting Mesh ventilation zones provide optimum moisture management and maximum breathability
Graduated Compression, Light Elite Cushioning High-density cushion in heel and toe offers protection in high impact areas. Ideal for low-volume mountaineering boots.
Care Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.