Super thin so it can slip into a boot that 's been molded to their feet, the RFL Jr. kid 's ski sock is the absolute lightest we make. Merino Wool to keep things warm, dry and naturally odor resistant so the weekend gear bags shouldn 't turn ripe before April. Height: OTC Weight: Ultra-Lightweight Pair with: Ski boots, snowboard boots, winter boots Darn Tough RFL Over-the-Calf Ultra Lightweight Ski & Snowboard Socks Youth | Black | Large | Christy Sports