These non-slip socks are made of bamboo cotton with special designed rubber pads under the feet and on top of the toes that makes sure that your child does not slip on slippery surfaces when starting to crawl and walk. Bamboo cotton is  Incredibly soft and perfect for sensitive baby skin Grows organically without using any pesticides or fertilizers feels cool in the Summer and warm in the Winter 100% biodegradable and certified according to Oeko-Tex Standard 100 Material: 70% Bamboo Cotton, 27% Polyamide, 3% Elastane non slip pads are made from silicone and are free from phthalates Wash inside out