To Avoid Buy a Wrong Case, PLEASE GO Settings→Device Options→Device Info→Find the Serial Number, the correct serial number of this item are G001PX,G001LG. The transparent tpu back cover is specially designed for All-New KIndle Paperwhite & Kindle Paperwhite Signature Edition 6.8" 11th Generation 2021 release, NOT fit any other device. The ultra clear case is made from premium TPU material, durable, flexible and lightweight, it provides the good protection for your device. Unique thick corners effectively absorb shocks when it is accidentally dropped,it protects your device from scratches, bumps and other daily damage. The crystal clear back designed to preserve the original look of the device and you can DIY the back with photos or cute pictures. Precise cutouts allow access to all features and controls, easy to install and take off, no tools required.