Abstract: Closable watertight case for storing accessories, such as car keys, credit cards, etc., which case comprises a bag and a closing means. The bag has an opening, which opening provides access in order to store the accessories in the bag. The bag is furthermore provided with a reinforcing body. The closable watertight case is designed to be used in situations, in which valuable accessories have to be stored in a safe and watertight manner. The closing means is formed by a closure sleeve, which comprises an insertion opening. The bag is inserted at least partly into the insertion opening of the closure sleeve. Characteristic of the invention is the fact that the reinforcing body with the bag can be connected to the closure sleeve by means of a click-fit connection in order to exert a clamping force on the bag in the closed position of the case.