The fabric used for the back is a hand-woven material made by a very rare weaving machine, which is unique in Japan and is made using a very rare weaving machine. It is a breathable material that keeps you cool in the summer and can stay at home in the winter. The fabric that touches the stomach is made of cotton smooth, which is very gentle to the touch, which is also used in human underwear. The accent pockets give it an elegant yet active impression. The in-house developed fabric material used in AVVERA's underwear has a silky luster, but is moist and smooth and very gentle to the touch. It is a highly functional material that is hygroscopic, breathable, and can also block ultraviolet rays. This is because the cotton fibers are woven from raw cotton, which is said to be a rare and valuable Ultimate Pima ®, which is carefully selected even in organic cotton, which is characterized by its thin, long, and strong fibers. (Ultimate Pima ® is a registered trademark of Taisho Bosho Co., Ltd.) Please use materials that are gentle on dogs who have more skin problems than humans.