NATULON Plus® zipper features a higher ratio of recycled material by utilizing both recycled tape and elements. NATULON Plus® zipper has the highest level of recycled material offered by YKK and can be further increased by pairing with a recycled diecast zinc slider! The material used in the coil zipper chain of NATULON Plus® zipper is made from 100% post-consumer recycled material. The material used in VISLON® zipper chain of NATULON Plus® zipper is made from more than 59% post & pre-consumer recycled material.