For Caterpillar Cat S31: ACCESSIBLE & FLAT DUE TO NANOPAD: The Smartphone is mounted without circumferential inner case, but only by the Nano Pad (STABLE ADHESIVE, REMOVABLE WITHOUT RESIDUE) inside the shell at Case. Thus all buttons and inlets on the sides are absolutely free and very accessible. The positive side effect of this innovative principle: The Walletcase is 3mm thinner than conventional Smartphone Cases. For Caterpillar Cat S31: FREE CAMERA: To use the camera, you can easily rotate the telefone in the shell. Thus, the camera is exposed. If the shell is closed, the camera is fully protected. For Caterpillar Cat S31: QUALITY: The artificial Leather of the protective case is compatible with Caterpillar Cat S31 and has a very high quality. Unlike many cheaper smartphone cases the grain of the artificial leather is modeled like natural cowhide and is visually almost indistinguishable from genuine leather. For Caterpillar Cat S31: STAND FUNCTION & CARD SLOTS: The Phone can be placed in the protective sheath. This makes it possible to watch videos or relaxed to make my self-timer Selfies without always keep the phone in his hand. In the card slots to be packed into bank cards etc. For Caterpillar Cat S31: