The protector is ~ 0.33mm thick and made with chemically treated, transparent tempered glass. Front film has ~9H hardness factor, tempered glass, ultra durable. Front film has oleophobic nano coating and HD optical transmittance. Front film retains maximum touch responsiveness. Special surface treatment process Super steel processing, burst the tiny particles to prevent the screen burst High-end silicone resin film laminating, make toughened glass, protection screen more completely, more human, even if broken, also won't splash around. Drain oil coating product oil pollution prevention, acid and alkali, resistant, resistant to fingerprint, eternal clear and clean. Long time use, eyes not easily fatigue, better protect vision 