A package includes a tray and a sleeve. The tray is slidable within the inner cavity between a closed position and an open position. A side panel of the sleeve is provided with a rear locking slot. A resiliently deflectable locking tab extends from the tray. The locking tab and rear locking slot are shaped and positioned such that when the tray is seated in its closed position, the tray locking tab extends through the sleeve locking slot, locking the tray into position. Downward deflection of the locking tab causes it to be released from the rear locking slot.