Abstract: The present invention relates to an overshoe configured to receive a foot wearing an inner shoe. The overshoe comprises an overshoe body which includes a sole portion that is sealing connected with an upper portion. The overshoe further comprises an expansion portion which is sealingly and operatively coupled to the upper portion. The expansion portion is adapted to enable the overshoe body to reversibly acquire an open position and a closed position. When the expansion portion is in the open position the overshoe is configured for receiving the foot and inner shoe and when the expansion portion is in the closed position the overshoe is configured to substantially enclose around the received foot and inner shoe. Furthermore, the expansion portion includes a plurality of accordion style folds which are configured to bias at least in part towards the closed position.