I don't know what brand it was, but the type I use has two prongs that go through the fabric. Then you put a round disc over the prongs, then bend them down. You have to have access to the back side of your fabric, but they are really easy to use. Then I sew a circle around the snap through both layers of fabric to give it strength. I've used them several times and have been very happy with them. Got a 12 pack at Joanns for a few dollars.