A carton blank, comprising: (a) a base panel; (b) a front panel foldably connected to a front edge portion of the base panel via a crease line; (c) the front wall panel foldably connected to a first front gusset panel on a left side and a second front gusset panel on a right side; (d) a left side panel foldably connected to a left side edge portion of the base panel via a crease line; (e) the left side panel foldably connected to a first forward side gusset panel on a forward side and a first rear side gusset panel on a rear side; (f) a right side panel foldably connected to a right side edge portion of the base panel via a crease line; (g) the right side panel foldably connected to a second forward side gusset panel on a forward side and a second rear side gusset panel on a rear side; (h) a back wall panel foldably connected to a rear edge portion of the base panel via a crease line; (i) the back wall panel foldably connected to a first rear gusset panel on a left side and a second rear gusset panel on a right side; (j) a lid panel foldably connected to an upper side of the back wall panel; (k) a left side flap foldably connected to a left side of the lid panel; (l) a right side flap foldably connected to a right side of the lid panel, wherein; (m) a lid lip panel is foldably connected to a front edge of the lid panel; charaterised in that the left and right side flaps of the lid panel comprise a diagonal perforation (92, 94) to assist in opening of the lid in use, the diagonal perforations (92, 94) defining, in part, a part of each of the left and right side flaps (80, 82) respectively, the part is disposed proximate the back wall panel, and wherein each of the diagonal perforations (92, 94) is caused to rip during opening of the carton, leaving the parts glued to a carton body and allowing the lid to open and reopen. (a) a base panel; (b) a front panel foldably connected to a front edge portion of the base panel via a crease line; (c) the front wall panel foldably connected to a first front gusset panel on a left side and a second front gusset panel on a right side; (d) a left side panel foldably connected to a left side edge portion of the base panel via a crease line; (e) the left side panel foldably connected to a first forward side gusset panel on a forward side and a first rear side gusset panel on a rear side; (f) a right side panel foldably connected to a right side edge portion of the base panel via a crease line; (g) the right side panel foldably connected to a second forward side gusset panel on a forward side and a second rear side gusset panel on a rear side; (h) a back wall panel foldably connected to a rear edge portion of the base panel via a crease line; (i) the back wall panel foldably connected to a first rear gusset panel on a left side and a second rear gusset panel on a right side; (j) a lid panel foldably connected to an upper side of the back wall panel; (k) a left side flap foldably connected to a left side of the lid panel; (l) a right side flap foldably connected to a right side of the lid panel, wherein; (m) a lid lip panel is foldably connected to a front edge of the lid panel; charaterised in that the left and right side flaps of the lid panel comprise a diagonal perforation (92, 94) to assist in opening of the lid in use, the diagonal perforations (92, 94) defining, in part, a part of each of the left and right side flaps (80, 82) respectively, the part is disposed proximate the back wall panel, and wherein each of the diagonal perforations (92, 94) is caused to rip during opening of the carton, leaving the parts glued to a carton body and allowing the lid to open and reopen.