Adjustable Phone Holder for Rugged Cases - Device thickness: 8-13 mm (0.31-0.51 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.