With a Gear4 D3O back cover, the back of your Samsung Galaxy S10 is protected against scratches, drops and bumps. The side of the case is made of D3O material. This material consists of particles that clump together and harden if you drop the case or hit something. The particles separate again after the moment of impact. Thanks to the D3O material, the cases of Gear4 protect your smartphone extremely well, and they are still relatively thin. The back cover has recesses on the side, bottom and top, making the buttons and inputs of your smartphone easy to use.