Our signature 4.4 oz T-shirt. Material: 100% Polyester. UV protection factor: UPF 20. Recommended for wearing when climbing. Made from quick-drying mesh material. The front is smooth and the back is mesh, providing excellent water absorption and quick-drying properties that are more than twice as fast as cotton. Size Chart：Please refer to the image for the size chart. Mens Model / 180cm / Wearing : XXL Women Model / 163cm / Wearing : L