The present invention is related to a double-shell blister packaging (1) for medicinal contents comprising one or more cavityies of a similar shape to the medicinal content, said double-shell packaging (1) being the assembly of a first and second mutilayer structures sealed to each other, each multilayer structure comprising a seal layer (3), one or more aluminium layers (4) with a thickness of at least 20 μm, preferably 30 μm, and two or more support layers (2), wherein said two or more support layers (2) have a tensile strength at break in machine and transversal direction of 200 N/mm2 or more, and an elongation at break of 50% or more, preferably 70% or more, measured according to EN ISO 527-3, each of said multilayer structures comprising cavities which, arranged face to face, enclose in use said medicinal content.
