A monofilm comprising at least 3 layers suitable for use in stand up pouches, wherein the monofilm is a coextruded film, comprising: a) a first surface layer comprised from 50 to 100 percent (by weight of the layer) of a linear low density polyethylene having a density from 0.89 to 0.91 g/cm 3 and a melt index of less than 1.3 dg/min, and a peak melting point in a range of from 85°C to 105°C, and a molecular weight distribution, Mw/Mn range of 2.0 to 3.0; and b) a core layer comprising from 60 to 100 percent (by weight of the layer) of a first multimodal polyethylene polymer having a multimodal distribution in terms of molecular weight, wherein said first multimodal polyethylene comprises units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), and wherein the first multimodal polyethylene polymer has a density in the range of 0.950- 0.965 g/cm 3, a melt index of less than 1.20 dg/min, a peak melting point greater than 120°C, and a molecular weight distribution, M w /M n ratio greater than 5.0; and c) a second surface layer which comprises: i) from 50 to 100 percent (by weight of the layer) of a second multimodal polyethylene polymer having a multimodal distribution in terms of molecular weight, wherein said second multimodal polyethylene comprises units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), said second multimodal polyethylene polymer having a density in the range of 0.950- 0.965 g/cm 3, a melt index of less than 1.20 dg/min, and a peak melting point in the range of from 120°C to 135°C, and a molecular weight distribution, M w /M n ratio greater than 5.0; and ii) from 0 to 50 percent (by weight of the layer) of a copolymer comprising units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), and wherein the polyethylene polymer has a density in the range of 0.91- to 0.95 g/cm 3, a melt index of less than 1.2 dg/min, a peak melting point greater than 110°C, and a molecular weight distribution, M w /M n ratio greater than 3.0 wherein component (ii) is a multimodal polyethylene polymer or a monomodal polyethylene polymer. a) a first surface layer comprised from 50 to 100 percent (by weight of the layer) of a linear low density polyethylene having a density from 0.89 to 0.91 g/cm 3 and a melt index of less than 1.3 dg/min, and a peak melting point in a range of from 85°C to 105°C, and a molecular weight distribution, Mw/Mn range of 2.0 to 3.0; and b) a core layer comprising from 60 to 100 percent (by weight of the layer) of a first multimodal polyethylene polymer having a multimodal distribution in terms of molecular weight, wherein said first multimodal polyethylene comprises units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), and wherein the first multimodal polyethylene polymer has a density in the range of 0.950- 0.965 g/cm 3, a melt index of less than 1.20 dg/min, a peak melting point greater than 120°C, and a molecular weight distribution, M w /M n ratio greater than 5.0; and c) a second surface layer which comprises: i) from 50 to 100 percent (by weight of the layer) of a second multimodal polyethylene polymer having a multimodal distribution in terms of molecular weight, wherein said second multimodal polyethylene comprises units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), said second multimodal polyethylene polymer having a density in the range of 0.950- 0.965 g/cm 3, a melt index of less than 1.20 dg/min, and a peak melting point in the range of from 120°C to 135°C, and a molecular weight distribution, M w /M n ratio greater than 5.0; and ii) from 0 to 50 percent (by weight of the layer) of a copolymer comprising units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), and wherein the polyethylene polymer has a density in the range of 0.91- to 0.95 g/cm 3, a melt index of less than 1.2 dg/min, a peak melting point greater than 110°C, and a molecular weight distribution, M w /M n ratio greater than 3.0 wherein component (ii) is a multimodal polyethylene polymer or a monomodal polyethylene polymer. i) from 50 to 100 percent (by weight of the layer) of a second multimodal polyethylene polymer having a multimodal distribution in terms of molecular weight, wherein said second multimodal polyethylene comprises units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), said second multimodal polyethylene polymer having a density in the range of 0.950- 0.965 g/cm 3, a melt index of less than 1.20 dg/min, and a peak melting point in the range of from 120°C to 135°C, and a molecular weight distribution, M w /M n ratio greater than 5.0; and ii) from 0 to 50 percent (by weight of the layer) of a copolymer comprising units derived from ethylene and at least one C 3 - C 10 alpha-olefin (preferably C 6 -C 8), and wherein the polyethylene polymer has a density in the range of 0.91- to 0.95 g/cm 3, a melt index of less than 1.2 dg/min, a peak melting point greater than 110°C, and a molecular weight distribution, M w /M n ratio greater than 3.0 wherein component (ii) is a multimodal polyethylene polymer or a monomodal polyethylene polymer.