Burton Ultralight Wool Sock - Men's True Black/Neon, L 2% spandex Insulation: ultralight Material: 48% nylon, 18% merino wool, 18% acrylic, 8% NanoGLIDE, 6% polypropylene, 2% spandex Height: above calf Recommended Use: warm-weather snowboarding Manufacturer Warranty: 1 year