I'm surprised there aren't any other reviews on this. For quick repairs on rip stop fabric, I don't think I could have found a better product. I had a couple tears in a sleeping bag that needed to be repaired. This kit allowed me to stop the bag from ripping any further, and made sure they were as air tight as before. Saved me a fortune over buying a new bag.
The pack comes with 4 repair patches. These are 7.5mm circular patches. They're really easy to apply, just like a sticker. Smooth out the surface, match up the tear, and put the sticker on top. Once on, they're visible, but not highly visible.
Worth note: I didn't realise the circles in the picture are trying to show you what you get. There are 3 transparent patches, and one black. This worked out pretty well for me, but it's good to keep that in mind.