Collapsible, i.e. at least two constitutive elements remaining hingedly connected collapsible side walls whereby all side walls are hingedly connected to each other and one or more side walls being foldable along a median line
Collapsible, i.e. at least two constitutive elements remaining hingedly connected collapsible side walls whereby all side walls are hingedly connected to each other and one or more side walls being foldable along a median line