A laminate comprising: a first film (410-a) having a first plurality of integrally connected, incrementally stretched, elongated corrugations (411-a) disposed side-by-side, each having: a first inward facing trough (412-a), which has a first trough smallest thickness; a first outward facing crest (413-a), which has a first crest smallest thickness; and a first intermediate portion disposed between the first trough and the first crest, wherein the first intermediate portion has a first intermediate smallest thickness, which is less than the first crest smallest thickness; a second film (420-a) having a second plurality of integrally connected, incrementally stretched, elongated corrugations disposed side-by-side, each having: a second inward facing trough (422-a), which has a second trough smallest thickness; a second outward facing crest (423-a), which has a second crest smallest thickness; and a second intermediate portion disposed between the second trough and the second crest, wherein the second intermediate portion has a second intermediate smallest thickness, which is less than the second crest smallest thickness; a plurality of attachment areas (405-a), wherein each of the attachment areas is directly connected to a trough of a corrugation from the first plurality to a trough of a corrugation from the second plurality. a first film (410-a) having a first plurality of integrally connected, incrementally stretched, elongated corrugations (411-a) disposed side-by-side, each having: a first inward facing trough (412-a), which has a first trough smallest thickness; a first outward facing crest (413-a), which has a first crest smallest thickness; and a first intermediate portion disposed between the first trough and the first crest, wherein the first intermediate portion has a first intermediate smallest thickness, which is less than the first crest smallest thickness; a first inward facing trough (412-a), which has a first trough smallest thickness; a first outward facing crest (413-a), which has a first crest smallest thickness; and a first intermediate portion disposed between the first trough and the first crest, wherein the first intermediate portion has a first intermediate smallest thickness, which is less than the first crest smallest thickness; a second film (420-a) having a second plurality of integrally connected, incrementally stretched, elongated corrugations disposed side-by-side, each having: a second inward facing trough (422-a), which has a second trough smallest thickness; a second outward facing crest (423-a), which has a second crest smallest thickness; and a second intermediate portion disposed between the second trough and the second crest, wherein the second intermediate portion has a second intermediate smallest thickness, which is less than the second crest smallest thickness; a second inward facing trough (422-a), which has a second trough smallest thickness; a second outward facing crest (423-a), which has a second crest smallest thickness; and a second intermediate portion disposed between the second trough and the second crest, wherein the second intermediate portion has a second intermediate smallest thickness, which is less than the second crest smallest thickness; a plurality of attachment areas (405-a), wherein each of the attachment areas is directly connected to a trough of a corrugation from the first plurality to a trough of a corrugation from the second plurality. <EOS>