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Thorlo XSKI eXtreme Ski Socks


This product is no longer available, but don't go just yet.


  • Thermolite® polyester offers maximum warmth and wicking performance for all-day ski adventures
  • Cushioned ball and heel offer great comfort and shear protection; feathered cushioning in the shin protects from boot pressure
  • Thin cushioning in the arch and flat-knit instep maximize ventilation, fit, and comfort
  • *Offer not valid for sale-price items ending in $._3 or $._9

Made in USA.

    Thorlo sock sizing:
  • Small fits women's shoe sizes 7 - 9 / men's shoe sizes 6 - 8
  • Medium fits women's shoe sizes 9.5 - 11.5 / men's shoe sizes 8.5 - 10
  • Large fits men's shoe sizes 10.5 - 11.5
  • X Large fits men's shoe sizes 12 - 14

View all Thorlo Men's Cross-Country Ski Socks

REI membership


Best Use Cross-country skiing
Fabric 76%Thermolite polyester/22% nylon/2% spandex
Sock Height Knee-high
Sock Cushioning Light cushioning
Gender Unisex

The REI Difference

100% satisfaction guaranteed

We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

Gear & advice you can trust

At REI, we live and breathe the outdoors, and we're passionate about sharing our expertise with people of all skill levels. Whether you're new to the outdoors or a seasoned explorer, we'll take the time to understand your needs and help you find the right gear for you.

10% annual member refund

Anyone can shop at REI, but for a one-time $20 fee you can become an REI member and enjoy a lifetime of benefits. These include an annual member refund, typically 10% back on eligible purchases.*



*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more