Aspects of the disclosure relate to a package, a carton, and a blank for forming the carton. An aspect of the invention provides a carton comprising a plurality of primary panels defining an interior of the carton. The plurality of panels comprises a top panel, a first side panel hinged to one of opposed side edges of the top panel, a second side panel hinged to the other of the side edges of the top panel, an upper end closure flap hinged to the top panel, a first side end closure flap hinged to the first side panel, a second side end closure flap hinged to the second side panel, and a foldable gusset folded into the interior of the carton. The gusset is hinged to the upper end closure flap.