Bross 5-Pack Organic Baby Socks https://www.amazon.com/dp/B09YRGYVVT?ref=myi_title_dp+ 76% Organic Cotton, 22% Polyamide, 2% Elastane 5pairs of socks will be sent in a box. SIZE 0-3 months SIZE 3-6 months SIZE 6-12 months (anti-slip) SIZE 12-18 months (anti-slip) SIZE 1-3 years (anti-slip) SIZE 3-5 years (anti-slip)