Great product with excellent finish and adhesive. STRONG adhesive. Which is good, but be prepared for it when installing.
I used this to repair my 2005 Honda Accord leather driver's seat, which was down to the foam cushion on the left bolster. Since more than enough of the surface leather material was generously supplied , I had more than enough to do a two layered application, which I recommend for people who are using this product for a seat repair.
Start by cutting paper templates to test fit the area (I used the actual package cardstock for my templates). Doing this will ensure you get the right contour and fit. I made a smaller patch first, to insert underneath the layer of the original leather, with the sticky side facing out. This allowed for a double-bond adhesive grip and improved the thickness in the area that had been worn down. Slide it into place, and THEN peal the adhesive backing off while holding it in position. This will prevent slippage while installing. I then applied the larger patch to the surface with enough coverage to adhere to the existing leather and grip the secondary smaller patch underneath. In this case, peal the adhesive backer off first, apply the patch at the stitch line of the outside of the bolster and gradually press into place.
The material patch is flat, but pliant, so if your seat has compound curves, you will end up with slack or a crease in your last area rubbed down. You can scissor-cut an inch or so, removing a thin V shape in the area and then the seam will line up without puckering the material. Be sure to tuck the seam edge into the bolster crevice and do your best to follow the original stitch line contours - this will hide the patch more smoothly with the seams hidden in the seat design.