These beautiful rainbow bamboo socks from Polly & Andy are seam free and super soft.  They are breathable; cooling in heat and snug in cold, and moisture wicking to keep little toes dry.  They also have a reinforced heel and toe because kids… Sustainable Material with Biodegradable Packaging. Fabric: 75% Bamboo, 23% Nylon, 2% Spandex.   Sock Sizes UK EU AGE 0 - 2 15 - 18 0 - 1 Years 3 - 5.5 19 - 22 1 - 2 Years 6 - 9 23 - 27 3 - 4 Years 10 - 1 28 - 33 5 - 8 Years 1.5 - 6 34 - 39 9 - 12 Years