I really like this phone holder. The best part of this holder is that it adjusts to any angle for great viewing at any angle, slides in and out for closer views and works in any position you move it to, even if that's 360°! The holder holds the phone secure so it's not to slip out and it adjusts to hold from small phones to large phones with ease at a click. I've tested it on many flat services and its suction cup mount to any flat surface. It's made of a heavy durable plastic or composite. I would recommend this phone holder highly for the price.