Material: Ether-based polyurethane; Size: W 15.2 x D 7.9 inches (385 x 200 mm); Thickness: 0.006 inches (0.15 mm); Accessories: Double sided tape (9.8 x 0.2 inches (250 x 5 mm); Compatible models: Almost all laptops *Keyboard size below 15.0 inches (380 x 250 x 250 mm). *Not compatible with special shaped keyboards. Operation may be difficult when attached to a keyboard with a trackpad equipped with Lenovo or Dell laptop computers.