The mountain bike silicone phone holder is a universally compatible design for all smartphones with screen sizes between 4.5 and 7 inches. It's dirt resistance and washable which is made of super strong silicone. The silicone strap resists vibration and holds your device firmly, keeping your device safe on your bike or stroller. This phone holder has 8 adjustment loops, you can just loop around the mount and insert the tab into the hole that holds onto the handlebar the tightest. It's it fits for any style or size of bicycle, motorcycle, scooter handlebar, strollers and shopping carts.