Phone Wear 360 Replacement Sleeve Piece. Only to be purchased if you need a replacement part. This sleeve piece attaches to the back of your Phone or to the back of your case. Comes with a double sided adhesive, abrasive tape, and an alcohol swab for mounting to your phone or to your case. Case must be compatible with device. Case must be hard plastic or metal, have a flat back and not made of soft plastic or rubber. Cases are available for purchase if you need one. Please see our selection of approved cases. We highly recommend that you purchase one of our approved cases.