a wrap - around carrier suitable for packaging tub - shaped articles , the bottom panel is formed from an inner flap to which article retainer flaps are hinged and an outer flap to which a locking tab is hinged , the retainer flaps are pivoted into the interior of the carrier by the locking tabs and include foldable side extensions which engage the bottom portions of adjacent spaced articles , a slit or opening between the retaining flaps permits entry of a locking tab . a projection on the locking tabs engaging the retainer flaps adjacent an edge thereof prevents withdrawal of the locking tabs from their activated positions .