The material used in EVA slippers is ethylene / vinyl acetate copolymer (also known as ethylene-vinyl acetate copolymer), which is prepared by the copolymerization of ethylene (E) and vinyl acetate (VA). The English full name is: EthyleneVinylAcetate. Referred to as EVA, the content is between 5% and 40%. Compared with polyethylene, due to the introduction of vinyl acetate monomer into the molecular chain, EVA reduces the high crystallinity and improves the flexibility, impact resistance, compatibility of fillers and thermal sealing properties, so it is widely used in foaming shoes, functional greenhouse film, packaging film, hot melt adhesive, wire and cable, toys and other fields.