Polly and Andy socks are possibly the comfiest socks we’ve ever had! These Tie Dye Bamboo socks are: Soft Seamed Super Super Soft (Yes 2 supers!) Breathable. Cooling in Heat and Snug in Cold Anti-Bacterial Moisture Wicking. Keeping little toes dry They have a reinforced Heel and Toe because kids… Sustainable Material with Biodegradable Packaging. Fabric: 75% Bamboo, 23% Nylon, 2% Spandex.