I purchased this from an online voucher site, and unfortunately it can't be returned with them. I always have zippers that need replacing, and so I thought this would be the solution. In particular, I had a hoodie with a broken zipper, but none of these replacements fit on. I also have a broken zipper on a skirt, but again, none of the replacements worked. It's not an “instant” solution and doesn't "snap on in seconds". This idea is great in theory, but in practice, it needs a redo so it can actually work to "Fix Any Zipper in a Snap!"