Knitted with a mix of eco-friendly organic cotton slub yarn and recycled polyester yarn, the fabric provides both the comfort of cotton and the quick-drying properties and durability of polyester. 81% Cotton, 12% Polyester, 6% Nylon, 1% Polyurethane Size M = 8 to 10 Size L = 10 to 12 Country of Origin: Japan Avoid tumble drying, as it may cause shrinkage.