A mattress, the width of the waist support portion is narrower than the width of the back support portion and the leg support portion. The mattress is not in a square structure but in am irregular shaped structure. for all parts of the back support portion, the lumbar support portion and the leg support portion, the mattress with excellent user comfortable mattress and the operators workability of care or care. By preparing of the necessary width to form the shape of the mattress itself, the mattress does not need to add additional items, remove additional objects like processes. According to the present invention, the bed of users comfortable easily implemented, and operator care or nursing bed user can easily put his hand to the users body on the mattress, making nursing or nursing jobs become easy. In addition, because having so (lifting or man) to go to a job transfer to the appropriate location on the mattress (nursing beds occasions equivalent to the greater trochanter position) with clear position indicator, it can easily enable the user to move in bed.
