Material: Silica gel Packaging:4pcs/set Bottom Shell Foot Pad Features: 1. Suitable for Macbook Pro Air A2681, A2442, A2485 models of notebook, perfect match with the original machine, fine workmanship. 2. The use of high-quality materials, wear-resistant and durable, long-term use without deformation, protect the laptop from scratching. 3. Without special tools, the user can easily attach the foot pad to the corresponding position, which is very easy to install and remove. 4. The bottom case foot pad can effectively improve the heat dissipation efficiency of the laptop and extend the service life of the computer. 5. The bottom case foot pad can keep the laptop stable, prevent sliding, and bring better work and study experience. Note: 1.Please allow 0.1-0.2cm differences due to manual measurement, thanks. 2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is the same.