Drawstring Bag with Toggle - Nylon Cinch and Ditty Pouch - Six Pack (Black, 5 x 7 Inch)

I use these to keep the magazines in the pistol cases, worked out great.

More like a fine woven plastic vs a synthetic cloth. In other words, not super rigid, but not soft like nylon. Just to point out. They work just fine.

These have poor quality stitching do not waste your money!