Material : Tempered glassThis premium screen and lens protection kit is designed specifically for GoPro Hero 12/11/10/9 Black, featuring tempered glass for the screen and lens, and HD film for the front LCD display to ensure a perfect fit on the curved design. With 99% high transmittance, it delivers crystal-clear visuals without distorting pixels, providing a true high-definition experience while reducing eye strain. The 9H hardness rating and 0.3mm thickness, combined with 6 protective layers, guard against dust, drops, scratches, and sharp objects, while maintaining full touch sensitivity. The 2.5D arc edge design offers a comfortable, warm feel and easy installation. Note: There might be an error of 1-3 cm due to manual measurement, and slight color differences may occur as a result of varying lighting and monitor effects.