Material: Polypropylene (PP). This button protection cover is durable and designed for long-lasting use. Size: 2.8 x 3.3 x 0.6 cm. It fits perfectly on A3 and A4 size copy boards. Function: Provides effective protection for the power switch of your light board, preventing accidental pressing while you work on your craft projects. Compatibility and applications: Suitable for light boards with touch switches, including light pads, drawing pads, light boxes for tracing, and light table power buttons. Use scenarios: - While tracing on a light box, the cover prevents accidental switch activation so you can maintain precise lines. - During detailed drawing or painting on a light pad, it helps avoid unintended power on/off interruptions. - In busy workspaces or during setup adjustments, it protects the switch from accidental presses as you move materials.