JazzyToes Bamboo Collection: Cowboy Boot (6-12M) Our socks made with rayon bamboo yarn is processed with low-impact dyes, and is OEKO-TEX Standard 100 certified free of any harmful chemicals Single pair on hang tag. Non-skid soles Materials: 85% Rayon made from bamboo , 10% Nylon, 5% Elastane CPSIA complaint, safe for your children