A carrier that is at least partially holding a plurality of containers. The carrier can include a plurality of panels comprising a bottom panel, a first side panel foldably connected to the bottom panel, a second side panel foldably connected to the bottom panel, a first top panel foldably connected to the first side panel, and a second top panel foldably connected to the second side panel. At least one container-receiving feature extends in at least the bottom panel. The at least one container-receiving feature can at least partially receive at least one container of the plurality of containers. At least one retention flap is foldably connected to the first top panel or the second top panel. The at least one retention flap engages at least a portion of a flange of at least one container.