Our signature rainbow socks. * Seamless toe * Super Super Soft (Yes 2 supers!) * Breathable. Cooling in Heat and Snug in Cold * Anti-Bacterial * Moisture Wicking. Keeping feet dry. Especially during sporting activities. They have a reinforced heel and toe for extra durability. Sustainable Material with Biodegradable Packaging. Fabric: 75% Bamboo, 23% Nylon, 2% Spandex. Washing Instructions We recommend washing your Bamboo Socks at 30°C. Do not tumbledry.