Adjustable Phone Holder – Device thickness: 6-10 mm (0.24-0.39 inches) – Width adjustment: 75-89 mm (2.95-3.50 inches). This Large Adjustable Universal Holder is designed to hold devices used without or with a skin or case. You make a one time easy adjustment to have the best fit for your device with or without a case. When you switch cases you can re-adjust the holder for a better fit. Rotate in portrait and landscape view, great for navigation.