Here's what other sites are saying:
Made of merino wool, the Icebreaker Men's Mountaineer Sock provides midweight thermal regulation, natural odor-resistance, and heavyweight cushioning for hikers and alpinists.
- Backcountry.com refers to the men's version
Icebreaker Men's Mountaineer Heavy Mid Calf Sock FEATURES of the Icebreaker Men's Mountaineer Heavy Mid Calf Sock Reliable comfort for extreme conditions High loft, dense cushion throughout for maximum warmth Highly breathable insulation for temperature/moisture control Achilles instep support prevents slipping Lin toe seam reduces bulk to prevent blisters Exterior reinforcement for maximum durability SPECIFICATIONS of the Icebreaker Men's Mountaineer Heavy Mid Calf Sock Height: 12in. / 30.5 cm 70% Merino Wool / 27% nylon / 3% lycra
- Moosejaw refers to the men's version