Very happy with the product after opening, (beautiful colors, beautiful material very thick kind of like a plasticized fabric, we can take it several times before reposition, but much less after cutting. indeed, it "simply" follow the tracks to the back meant to indicate the computer format. making my laptop 15,6 "I did so and carefully cut along the lines drawn on the back meadow. What was my surprise to see that the sticker once cut was not wide enough ???? my laptop is a 16: 9 and the cuts do not include this format. I have had to act less "silly" and did not follow instructions and stick it in the format 17 "and then adjust the cuts. I just feel I ruined my money (about 15) because I have not had the desired result. other than that the product is beau.juste a little disappointed by the size