Described is a transformable garment comprising a base portion and at least one extension portion stored in at least one pocket of the base portion when the at least one extension portion is not in use, wherein the at least one extension portion is adapted, when in use, to cover at least an extremity of a wearer of the garment and less than ⅔ of the body surface of the wearer covered by the base portion, and wherein the at least one extension portion is permanently connected to the base portion along the majority of a connecting edge between the at least one extension portion and the base portion.