Here is my take. Product is 5 star. Delivery is 5 star. I only am giving 4 stars is because it doesn't come with an instruction sheet. But the patch is good with great color.It is simple but ironing on can be intimidating if you haven't done it before and aren't familiar with an iron. But I'm here to provide an amateur instruction sheet. First comes the disclaimer. I'm not a professional. I don't do this for a living. I'm not even good at this. Contact a professional. Or just look it up online. First heat up the iron at a high setting. No steam. Then place the patch in the desired location. Place a thin cloth or linen over the patch, not to place the iron directly onto the patch. Heat the patch through the cloth to melt the iron-on to desired location. Make sure it is fully attached. Do not touch the heated patch until it has cooled off. Then Nerd out with the Fan boy patch.I recommend it but I also recommend a quick instruction manual in the packaging from the manufacturers. It would have gotten 5 stars with that.Oh, and I doubt it works on leather, but I would like confirmation.