Abstract: A front blister is formed with a forwardly extending bubble and a slot extending downwardly in an edge portion above the bubble. A backing card formed with upper, center and lower portions, is attached to the back of the blister at the upper and lower portions to close the back of the bubble. The center portion of the card comprises a closure panel, pivotable between an open position providing access to contents in the bubble and a closed position, and a locking tab extending upwardly therefrom, the locking tab being positioned for folding into and out of the slot and sized for an interference fit with the slot to releasably maintain the panel in a closed position. To initially open the package, the center portion is separated from the upper portion of the card along perforation lines formed in the card, and is pivoted away from the blister about a fold line at the junction with the lower portion of the card.