The Darn Tough RFL Jr. OTC Ultra-Lightweight Sock is the ultimate accessory for our shred-ready kiddos at their performance peak. These sporty ski socks are so thin and lightweight, they slide right into ski and snowboard boots, even after they've been thermo-molded for a perfect fit. Merino wool offers the warmth, wicking, and comfort they need for successful laps, and they naturally resist odor, even after training days.