OTOMAN vest is 100% Natural Bamboo cotton which is made in Europe. A bamboo textile is cloth, yarn, or clothing that is made from bamboo fibers. While historically used only for structural elements, such as bustles and the ribs of corsets, in recent years, different technologies have been developed that allow bamboo fiber to be used for a wide range of textile and fashion applications. Bamboo yarn can also be blended with other textile fibers such as hemp or spandex. Bamboo is an alternative to plastic, but is renewable and can be replenished at a fast rate. Bamboo is 40% more absorbent than even the finest organic cotton, wicking moisture away from the skin much faster and keeping you dry and comfortable easier. Bamboo can take in three times more water than its weight which once made into a fabric, means that it also is able to get rid of moisture faster.