A process for manufacturing a stretch-modified elastomeric multilayer film, the process comprising: providing a multilayer film comprising: a core layer comprising a first ethylene-α-olefin block copolymer, wherein the first ethylene-α-olefin block copolymer comprises at least 50 mol.% ethylene, has a melt index (I 2) from 0.5 g/10 min to 5 g/10 min, and has a density of 0.850 g/cm 3 (g/cc) to 0.890 g/cm 3 (g/cc); and at least one outer layer independently comprising a second ethylene-α-olefin block copolymer and from 2.5 to 30 wt.% of an antiblock agent, wherein the second ethylene-α-olefin block copolymer comprises at least 50 mol.% ethylene, has a melt index (I 2) from 0.5 g/10 min to 25 g/10 min, and has a density of 0.850 g/cm 3 (g/cc) to 0.890 g/cm 3 (g/cc); wherein the density of the first ethylene-α-olefin block copolymer is equal to or greater than the density of the second ethylene-α-olefin block copolymer; performing a first stretch of the film in at least one direction at a draw ratio of at least 1.9 to form a stretch-modified multilayer film, wherein the first stretch in the at least one direction is conducted after film formation and prior to subsequent process steps; and substantially relaxing the stretch-modified multilayer film in the at least one direction. providing a multilayer film comprising: a core layer comprising a first ethylene-α-olefin block copolymer, wherein the first ethylene-α-olefin block copolymer comprises at least 50 mol.% ethylene, has a melt index (I 2) from 0.5 g/10 min to 5 g/10 min, and has a density of 0.850 g/cm 3 (g/cc) to 0.890 g/cm 3 (g/cc); and at least one outer layer independently comprising a second ethylene-α-olefin block copolymer and from 2.5 to 30 wt.% of an antiblock agent, wherein the second ethylene-α-olefin block copolymer comprises at least 50 mol.% ethylene, has a melt index (I 2) from 0.5 g/10 min to 25 g/10 min, and has a density of 0.850 g/cm 3 (g/cc) to 0.890 g/cm 3 (g/cc); wherein the density of the first ethylene-α-olefin block copolymer is equal to or greater than the density of the second ethylene-α-olefin block copolymer; a core layer comprising a first ethylene-α-olefin block copolymer, wherein the first ethylene-α-olefin block copolymer comprises at least 50 mol.% ethylene, has a melt index (I 2) from 0.5 g/10 min to 5 g/10 min, and has a density of 0.850 g/cm 3 (g/cc) to 0.890 g/cm 3 (g/cc); and at least one outer layer independently comprising a second ethylene-α-olefin block copolymer and from 2.5 to 30 wt.% of an antiblock agent, wherein the second ethylene-α-olefin block copolymer comprises at least 50 mol.% ethylene, has a melt index (I 2) from 0.5 g/10 min to 25 g/10 min, and has a density of 0.850 g/cm 3 (g/cc) to 0.890 g/cm 3 (g/cc); wherein the density of the first ethylene-α-olefin block copolymer is equal to or greater than the density of the second ethylene-α-olefin block copolymer; performing a first stretch of the film in at least one direction at a draw ratio of at least 1.9 to form a stretch-modified multilayer film, wherein the first stretch in the at least one direction is conducted after film formation and prior to subsequent process steps; and substantially relaxing the stretch-modified multilayer film in the at least one direction.