First trim off the black part of the skin where it says Size, number, ect. This divides the top skin with the wrist pad skin.



Clean the top of your laptop and wrist pad section with a safe cleaner. I use just a tiny bit of rubbing alcohol and rub very lightly until surface looks clean. You can also use a damp towel to do your cleaning.



Now measure your width and height of the top section of your laptop.