Everything was fine at the beginning, the installation instructions are incomprehensible but intuitive. Clean the surface of the laptop and stick the pads on. Closer to the back = lower height. My problem with this is that after 2 weeks of use, 8 hours of typing, the weight of my hands and the ThinkPad seems to have deformed it. Now it's softer and looser. The product didn't last. I love the color and the concept.