Case for electronic device

A case for an electronic device, the case comprising:

• a fastening part attachable and detachable to and from at least part of the electronic device;
• a cover configured to cover a first surface of the electronic device that faces a first direction, when the cover is in a closed state;
• and
• a connecting part configured to connect the fastening part and the cover,
• wherein the cover includes:
• a base plate including:
• a first surface that faces the first direction, when the cover is in the closed state, the first surface having a curved surface shape,
• a second surface that faces a second direction and faces the electronic device, when the cover is in the closed state, the second direction being opposite to the first direction, and
• a fixing groove indented into the second surface of the base plate that faces the second direction, when the cover is in the closed state, wherein a soft material part is inserted to the fixing groove,
• wherein at least a portion of the soft material part makes contact with the first surface of the electronic device,
• wherein an area of the second surface of the base plate makes contact with the soft material part which has a flat surface shape, and
• wherein the base plate is formed of a rigid material.