Detailed Product Description Features: 1) Nylon zipper: 3# nylon without cord or with cord (two stitches, four stitches)2) Close end and open end: a) Close end: 4# nylon, 5# nylon b) Open end: 7#, 8#, 10# 2) Plastic ziper, 3#, 5#, 8# close end, open end and two way two sliders