A sleeve operable to at least partially contain a cylindrical article, the sleeve including opposing planar side panels; bowed dust flaps extending upwardly from said side panels; front and back panels, each having rounded, upper corner portions; and overlapping top panels in superposing relation to upper portions of said bowed dust flaps, said overlapping top panels being mutually secured, whereby said bowed dust flaps are retained in a bowed condition that conforms with said rounded upper panel portions of said front and back panels