When I think about what's important about my device & how I use it. It's the screen, everything defers to the screen. So when I recently stumbled upon a super hard form of volcanic glass on my recent trek to the South Pacific, I knew I'd found the substance to protect my precious screen & connection to the outside world. Carved from gigantic slabs of glass, the Vitri Fender is beautifully thin, yet incredibly strong, just like me! It's resistant to supersonic blows by a hammer, ear-piercing 'nail on a chalkboard' scratches by a nail & of course a meteor showers. It also repulses the oil in my Tactino's hands, leaving the screen sparkling for longer & as sensitive to my delicate touch as ever. Coupled with the magnificent Magna Tuff or tremendous Telefender, I know wherever I am, my device is upto to the task & protected during my travels.