Keep tiny toes snug and happy when it's cold and wet. Our brilliant Navy Blue Cosy Socks are made from an extra thick cotton-rich knit, to ensure little feet stay dry and warm whatever the weather. The longer-length style is designed to be worn with Wellington boots, and kids will love the fun designs. Knee length. Extra thick fleecy knit. One size fits 1-5 years. 100% Polyester. Machine washable.