Product Review

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.