Familiar with the Mountaineering sock, one of our classics? Say hello to its technologically advanced cousin, the PhD Outdoor Heavy Crew. Thanks to WOW™ technology in high density impact zones, shock and abrasion are reduced. The 4-Degree Fit System keeps this heavy full-cushioned sock in place. Reducing shock and abrasion, this moisture, temperature and odor controlling sock features a 4-Degree Fit System keeps the sock in place. Made in the USA of New Zealand Zque™ Merino wool.

Features
• 4-Degree Fit System for all day performance fit
• WOW technology™ in High Density Impact Zones to reduce shock and abrasion
• SmartWool inside for moisture, temperature and odor control
• Duroyarn reinforcement for added comfort and durabiltiy