Two-layer cowhide, also known as coated cowhide or composite cowhide, is not cowhide, but the leftover bits and pieces of real first-layer cowhide and real second-layer cowhide are broken, and then polyethylene material is added for re-bonding, and then chemical materials are sprayed on the surface or PVC or PU film is coated, which still maintains the characteristics of cowhide, but the durability and strength are not as good as those of the first-layer cowhide. The real top leather is divided into high-quality top leather and ordinary top leather, and the second leather is also divided into real second leather (that is, broken leather) and composite leather, so it is also called coated cowhide. Its price is cheaper and its utilization rate is high. It is also made into various grades with the change of technology, and the surface of the second layer is much rougher than that of the first layer. Therefore, the surface coating in some brands of fitness belts is colored with this leather. Because of the resin and color, the average customer can't see the first floor and the second floor, and the first floor is expensive. So the cost is also saved, and it can be given to customers cheaply. The composite cowhide in the two-layer cowhide is smooth, bright, wrinkle-free and thick; Broken skin is real cowhide, with thick skin. The first layer of cowhide is wrinkled. The higher the price, the thinner the first layer of cowhide and the thicker the cortex.