The size is S, suitable for 21cm to 22cm. The material is 100% nylon for the outer fabric and 100% cotton for the lining. It uses nylon tricot fabric, which is strong, highly elastic, and resistant to deformation. It's easy to wash, dries quickly, and requires no ironing. It has five hooks (kohaze). Although unused, it has been stored for a long time, so please refrain from purchasing if you are looking for a perfect item.