A wiper blade package (100, 200), comprising; a first panel bendable around a first bend line extending in a longitudinal direction between both lateral edges (114, 115), the first panel having a lid flap at a longitudinal end, the lid flap being foldable around the first bend line and pivotable around a first hinge line intersecting the first bend line at an acute angle in an inward direction; a second panel (130, 230) opposed to the first panel and having a first engagement flap folded toward the first panel at a longitudinal end; a first side panel extending along opposing edges (115, 117) of the first panel and the second panel; a second side panel extending along edges (114, 116) opposed to the opposing edges of the first panel and the second panel; and a receiving portion having a receiving cavity surrounded by the first panel, the second panel, the first side panel and the second side panel, wherein the lid flap engages a free end of the first engagement flap at a free end thereof, closing the receiving portion, wherein the lid flap can be pivoted from the first engagement flap by pressing the first and second side panels toward the receiving portion, opening the receiving portion, characterised in that the lid flap has, at the free end thereof, at least one engagement tab engaging the free end of the first engagement flap, wherein the engagement tab intervenes between the first engagement flap and the second panel in a closed position where the lid flap closes the receiving portion, and in that the first engagement flap has an engagement notch at the free end thereof, and a fixed end of the engagement tab is fitted to the engagement notch. a first panel bendable around a first bend line extending in a longitudinal direction between both lateral edges (114, 115), the first panel having a lid flap at a longitudinal end, the lid flap being foldable around the first bend line and pivotable around a first hinge line intersecting the first bend line at an acute angle in an inward direction; a second panel (130, 230) opposed to the first panel and having a first engagement flap folded toward the first panel at a longitudinal end; a first side panel extending along opposing edges (115, 117) of the first panel and the second panel; a second side panel extending along edges (114, 116) opposed to the opposing edges of the first panel and the second panel; and a receiving portion having a receiving cavity surrounded by the first panel, the second panel, the first side panel and the second side panel, wherein the lid flap engages a free end of the first engagement flap at a free end thereof, closing the receiving portion, wherein the lid flap can be pivoted from the first engagement flap by pressing the first and second side panels toward the receiving portion, opening the receiving portion, characterised in that the lid flap has, at the free end thereof, at least one engagement tab engaging the free end of the first engagement flap, wherein the engagement tab intervenes between the first engagement flap and the second panel in a closed position where the lid flap closes the receiving portion, and in that the first engagement flap has an engagement notch at the free end thereof, and a fixed end of the engagement tab is fitted to the engagement notch.