Trident Cyclops Case Clear for Microsoft Surface 3 CY-MSSF03-CLBLK Feature two layers of shock-absorbing Thermo Plastic Elastomer (TPE) and polycarbonate for outstanding drop protection Includes power-port and audio-jack protection to keep out dirt and debris Built to meet military standards MIL-STD-810G for drop and vibration Port cover can be removed to allow the use of a Type Cover keyboard, without needing to remove the entire case