Belt support is not considered a black five-category trademark. In the 45 categories of trademark classification, waistbands belong to category 25 sportswear, shoes and hats, socks and gloves. A waist protector is a cloth used to protect the waist, also called a waist belt. With the development of science and technology, the material of the waist protector is no longer limited to ordinary fabrics, and its function is not limited to warmth.