The North Face Ultra Heavyweight Hike
Here's what other sites are saying:
New heavyweight performance hiking sock is ideal for backpacking trips, and rugged trails. Heavyweight merino wool-blend yarns deliver excellent thermal insulation via merino wool and comfort crucial for winter conditions. HyActive yarns aid with moisture management, wicking sweat away from skin; keeping your feet cool and dry. Slight elastane aids with stretch.
- The North Face refers to the men's version