The cotton blend material is soft, thin, gentle on the skin, and highly breathable. Excellent sweat absorption keeps you clean and fresh even when you sweat. Good stretch provides a comfortable fit without constriction. The elastic sock opening won't easily slip off. Perfect for going to school, playing, and exercising. 【Color】 ・Multicolor: 6 types ※Please tell us which type you would like. 【Size】 ・Total length approx. 30cm, one size (suitable for ages 1-10) 【Composition】 Cotton 79.4%, Nylon 18.5%, Polyurethane 2.1% 【Length】 The design has no heel, so it can be worn by all girls and boys aged 1-10. Depending on height, the opening may or may not go over the knee. 【Thickness】 Normal 【Quantity】 Set of 4 pairs