English name: Sandwich mesh fabric or air mesh fabric Definition of sandwich mesh: sandwich mesh is a double needle bed warp knitted mesh, which is composed of mesh surface, connecting monofilament and flat cloth bottom. Because of its three-dimensional mesh structure, it is very similar to the sandwich burger in the West, so it is named sandwich mesh. Generally, the upper and lower filaments are polyester, and the middle connecting filament is polyester monofilament. The thickness is generally 2-4mm. It can produce shoes as shoe fabrics with good air permeability; The straps that can be used to produce schoolbags are relatively elastic -- reduce the stress on children's shoulders; It can produce pillows with good elasticity - it can improve sleep quality; It can be used as a stroller cushion with good elasticity and comfort; It can also produce golf bags, sports protectors, toys, sports shoes, bags, etc.