This is a sample product, thinner and shorter (17cm length) than the silk belly warmers I usually sell. Free size (unisex) Color: Black Quality: Silk, Nylon, Polyester Made in Japan This is even thinner and shorter than usual, designed for spring and summer. It has good elasticity and can be used by both men and women, and also by children. There are only about 5 samples with different lengths, so please purchase them early. ^_^