These coils look great, are well made and un-coil smoothly.

I recommend this product any time you will use a mouth-coil, but will not be producing it from your mouth.

There are two reasons for that...
1: The mylar material is sharp around the edges, and may slice your mouth. I purchased and used two packages of these coils and could not drink orange juice for a week.

2: It tends to slip out of your mouth as you pull it. Pulling a couple inches of streamer out of your mouth only to have the remaining coil pop out isn't that impressive. You can manipulate it with your tongue/cheeks to prevent this, but this pretty much guarenees that you will cut yourself on the mylar.

Other than that, this is a great product. If I'm pulling coils from an "empty" hand or hat, these are the ones I use. They honestly look better, than any other coils I've ever used.