Smartwool PhD Outdoor Mountaineer Socks - Unisex 5047-821

Smartwool PhD Outdoor Mountaineer Socks - Unisex

Size Guide

Price match guarantee

Found a better deal in Canada? Up to 30 days after purchase – we’ll match it.

If you see a lower price for this exact item advertised online, in print or in a store, give us a call at 1 (888) 847-0770.

If it’s identical, brand-new, in stock, and sold and shipped by a Canadian-based retailer, we’ll match that price.


Show Description

Designed to reduce your recovery time after hard days in the alpine. Graduated compression technology can improve blood flow, reduce lactic acid build-up and reduce swelling, so you recover faster after epic days.

  • Indestructawool blend improves durability in the heel and forefoot.
  • High-density cushion in heel and toe provide protection and comfort in high-impact areas.
  • Fit system incorporates fit bands on the ankle, upper instep, lower instep and arch.
  • Mesh zones for venting.
  • Low-profile fit and seamless toe work well with low-volume mountaineering boots.

Tech specs

Show Tech specs
Ideal for Alpine climbing and mountaineering
Fabric content
  • 50% merino wool
  • 49% nylon
  • 1% spandex
Thickness Medium
Cuff height Knee

Layers of cushioning, in some athletic socks, are knit in to reduce impact. Mapped socks are activity-specific and will offer cushioning in common pressure areas.

Heel and forefoot
Anatomical fit

Left foot and right foot specific socks provide precise fit.

Additional feature(s)
  • Active compression
  • Seamless toe
Made in USA