<p>Foil bag comprises a stepped top sealing seam (7) having a first section (13) extending from the outer edge of a side fold (5) to the ends fixed to front and rear surfaces (2, 3). The seam has a further section (15) for joining an upwardly protruding bag section (19) to the edges in a sealing manner. The further section extends up to the outer edge of the bag along a side fold (4). The bag section is separated partially or completely along a separating line (16) arranged above a reusable strip (8). Preferred Features: The reusable strip has a film support fixed to the inner surface of the bag and strip-like connecting elements molded to the support.</p>
