Glue foam bottom is a bottoming fabric made of rubber closed-cell or open-cell foam materials made of natural or artificial rubber. Half a century ago, people used this material in large quantities for sneakers, sports shoes, travel shoes, liberation shoes, casual shoes, etc.

Polyurethane is a polymer with repeating structural units of urethane segments made by the reaction of isocyanate and polyol. Compared with ordinary rubber soles, polyurethane soles are lighter in weight and have better wear resistance. Polyurethane soles use polyurethane resin as the main raw material, which solves the current problems of domestic plastic soles and recycled rubber soles that are easy to break and the rubber soles that are easy to unglue.