1. Material: TPU2. Use environmentally friendly materials, wear-resistant, transparent, and elastic3. TPU material, can be rinsed, easy to clean, can be used repeatedly, not repeatedly rubbed4. Prevent water droplets, dust and stains from entering the keyboard and damaging the machine in all directions5. Thin and transparent, about 0.13mm thickness, does not affect the use6. Only keyboard film is shipped, no others

http://olla.gr/jrc-0.13mm-transparent-tpu-laptop-keyboard-protective-film-for-macbook-air-13.3-inch-a1369-and-a1466-jrc/