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 school, play, and sports! 【Color】 ・Multicolor, 2 types Please specify your desired type. 【Size】 ・Total length approx. 30cm, One size (Age 1-10) 【Composition】 Cotton 79.4%, Nylon 18.5%, Polyurethane 2.1% 【Length】 The design has no heel, so it fits 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 5 pairs