PhD® Mountaineering Sock

SW048-Familiar with the classic SmartWool® Mountaineering sock? Say hello to the stronger, more durable, more comfortable PhD® Mountaineer. ReliaWool™ Technology for improved durability in the high wear areas and the 4 Degree Elite™ fit system, to keep the sock in place and giving you all-sport versatility.


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    • 4 Degree Elite™ Fit System uses two elastics for greater stretch and recovery to keep the sock in place
    • Patented ReliaWool™ Technology in high impact areas provides the longer lasting protection to keep feet comfortable
    • Heavy cushion heel and toe for maximum comfort and protection in the highest impact areas of the sock
    • Flat knit foot and leg with heavy duty yarns for maximum comfort and protection in low volume mountaineering boots
    • 14" overall height

    Knit in USA of Imported Yarn: 76% Merino Wool, 22% Nylon, 2% Elastane

    Style SW0SW048

    Ultra Light and Heavy Cushion

    Minimal cushioning in the leg and foot for maximum performance in mountaineering boots combined with Heavy Cushioning in the toe and heel for protection and comfort.


    Machine Wash Warm Gentle Cycle. Turn inside out before washing.

    Do Not Bleach. Bleach damages the natural wool fiber.

    Tumble Dry Low. Lay flat or line dry for best appearance.

    Do Not Iron. Who will argue with that?

    Do Not Dry Clean. You can care for this all on your own!


    ADULT SOCKS (shoe size reference)

    Sizes US Men US Women Euro UK
    Small 3-5.5 4-6.5 34-37 2-4.5
    Medium 6-8.5 7-9.5 38-41 5-7.5
    Large 9-11.5 10-12.5 42-45 8-10.5
    X Large 12-14.5 N/A 46-49 11-13.5
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