A resealable package assembly, the package assembly comprising a container and a cover, the container and the cover adapted to sealingly engage one another, the container including: a polymeric substrate defining a sealing face, and a first sealing layer disposed on the sealing face of the polymeric substrate; wherein the cover defines an outer face and an inner face, the inner face directed towards the sealing face of the polymeric substrate upon sealingly engaging the container and the cover to one another, the cover including: an outer substrate providing the outer face of the cover, an inner substrate, a pressure sensitive adhesive layer disposed between the outer substrate and the inner substrate, a second sealing layer directly disposed on the inner substrate, the second sealing layer providing the inner face of the cover and being thermally bonded to the first sealing layer of the container, a barrier layer disposed (i) between the inner substrate and the outer substrate, or (ii) on the second sealing layer of the inner substrate; and a release layer disposed between the inner substrate and the pressure sensitive adhesive layer, and immediately adjacent to the pressure sensitive adhesive layer, wherein the adhesive is not in contact with the first or second sealing layers (110, 80), and wherein a cut, score, or slit is provided in at least the second sealing layer of the cover. a polymeric substrate defining a sealing face, and a first sealing layer disposed on the sealing face of the polymeric substrate; wherein the cover defines an outer face and an inner face, the inner face directed towards the sealing face of the polymeric substrate upon sealingly engaging the container and the cover to one another, the cover including: an outer substrate providing the outer face of the cover, an inner substrate, a pressure sensitive adhesive layer disposed between the outer substrate and the inner substrate, a second sealing layer directly disposed on the inner substrate, the second sealing layer providing the inner face of the cover and being thermally bonded to the first sealing layer of the container, a barrier layer disposed (i) between the inner substrate and the outer substrate, or (ii) on the second sealing layer of the inner substrate; and a release layer disposed between the inner substrate and the pressure sensitive adhesive layer, and immediately adjacent to the pressure sensitive adhesive layer, wherein the adhesive is not in contact with the first or second sealing layers (110, 80), and wherein a cut, score, or slit is provided in at least the second sealing layer of the cover. an outer substrate providing the outer face of the cover, an inner substrate, a pressure sensitive adhesive layer disposed between the outer substrate and the inner substrate, a second sealing layer directly disposed on the inner substrate, the second sealing layer providing the inner face of the cover and being thermally bonded to the first sealing layer of the container, a barrier layer disposed (i) between the inner substrate and the outer substrate, or (ii) on the second sealing layer of the inner substrate; and a release layer disposed between the inner substrate and the pressure sensitive adhesive layer, and immediately adjacent to the pressure sensitive adhesive layer, wherein the adhesive is not in contact with the first or second sealing layers (110, 80), and wherein a cut, score, or slit is provided in at least the second sealing layer of the cover.