I like these patches for the sides of my dog's harness. The reflective stitching makes them really eye catching. I like that they're orange and not red, too. They come with velcro on the back. If your harness already has the second half of the velcro on there, you'll have to peel the backs off of these to use them. The "hard" side of the velcro is on the back of the actual patch, and the "soft" side is the part that will peel away. You could easily sew the soft side onto whatever you want the patches on. There is no adhesive on the patches, but I imagine if you had fabric glue that might work. I got the 1-inch size and they fit perfectly on the harness.