You can install this phone holder easily without any special tools, and it's safe and secure to use right away... Just install the base on the handlebar of your bike or grocery cart, a kid's stroller, a treadmill, it works well for the wheelchair too. Cover the 4 corners of the phone with an elastic band; it's designed such that you can access all the buttons easily. Now insert the phone into the base, its as easy as one, two, three... and the phone is ready to use at any angle, it can be rotated 360 degrees as well! Answer your phone, check your emails or take a selfie while on the treadmill, check the GPS during a biking journey, check your grocery list from the grocery cart while in the supermarket and put on some nursery rhymes on your phone and keep your toddler entertained while in the stroller. This phone holder is not only useful and universal, it's truly an All Rounder! DETAILS:Flexible Silicone absorbs vibrations and shocks. Prevents from causing damage to your prized possession, your phone.Compatible with iPhone 11/iPhone XS max/XS/XR/X/8 Plus/8/7Plus/7/6Plus/6, Galaxy S10/S10 Plus/S9 Plus/S8/S8 Plus/S7/Note 8, Google,and more.Great convenience, get more to give it to all your family members.