Material: ABS plastic: 100%. Provides protection against hackers potentially spying on you. Preventing scratches on the camera. Once aligned over the webcam, it needs to be pressed firmly for a few seconds for a strong seal. Then the camera can be blocked/unblocked by sliding the flap to the side. Due to its thin design it does not prevent laptops from closing perfectly. Compatible with most electronic devices with camera. Dimensions: 3.2 x 1.2 x 0.1cm. Ref: UTPF3026