Grooved cotton is made of polyolefin as the main raw material, supplemented by a variety of accessories without any harmful substances, through extrusion molding, radiation crosslinking, high temperature foaming and other processing technologies. These products are exquisite in appearance, soft in hand and good in processability. It has the characteristics of high resilience, thermal insulation, sound insulation and shock absorption, mildew resistance and antibacterial, weather resistance and corrosion resistance, and environmental protection, and is a functional material that meets international environmental protection standards.