This product is designed to work with most phone and case combinations while allowing you the option to change cases and still use the system. Non adhesive cell phone lanyard pad is made of Steel material, safe and reliable, not easy to be broken, light in weight; It won't add too much burden to your phone or cause too much trouble for your daily use These phone lanyard tether tabs are easy to install and use, suitable for most buckled neck and wrist lanyards; When you use the cell phone lanyard piece outside, it can withstand the pulling and tearing, firmly attached to the phone, can protect your phone from being lost or stolen by thieves No tools required, pass the pad through charging hole of fully covered phone case, then insert your phone and connect to the lanyard The package includes 1 Phone Tether Tab,1 Spring ring-0.27inch Thickness.