The secret to Defense Clear’s ultra protective design is two layers of shock absorbing rubber. The first is a clear, rubbery TPU that lines the outer edge of your case, providing grip, button protection, and overall drop protection. Inside is a layer of special DropShield shock absorbing polymer, which actively deflects the force of shocks away from your phone. On the back is a clear, hard polycarbonate shield to protect the main body of your phone. These Huawei P20 protective cases have a raised front lip to keep your screen off of tables and other flat surfaces.