5mm closed coil. 1-1/4" across the total tape
Nylon coil. Polyester tape.
#5 Nylon Coil Zipper is stronger & bigger than #3.
It is also stronger than #5 metal or brass toothed zipper that we've used for upholstery for years. This zipper is great for cushions, upholstery, slipcovers, purses, tents & dog beds.
Colors will vary from monitor to monitor. You may purchase actual 5" snips of all the colors I dye under "color samples".