What Our Gearhead® Experts Are Saying:"I love how these socks manage to stay thin and breathable while still keeping my feet warm all day in tight-fitting ski boots. The silk and Merino blend feels super soft, and they never slide down or bunch up, even after hours on the mountain."Long days on the mountain call for socks that do more than just keep our feet warm. That’s why we reach for the Grenoble Ultra Lightweight Sock from Fox River. This sock is purpose-built with a blend of Merino wool and silk that delivers next-to-skin softness, warmth, and impressive moisture control—ideal for full days in boots. Designed anatomically to match the shape of each foot, the Grenoble’s left/right fit ensures there’s no bunching or friction during high-output turns. A smooth, flat toe seam eliminates pressure points, while memory-knit construction keeps the fit dialed in day after day. Reinforced heel and toe zones extend the sock’s lifespan—because a good pair should stick around for more than one season.