A cross-linked thermoplastic multilayer film for use as a top web in vacuum skin packaging applications comprising at least - an outer heat sealable layer (a), - a layer (b) directly adhered to the layer (a) or adhered to the layer (a) with the interposition of an optional layer (a') and, - an optional thermoplastic layer (c) adjacent and directly bonded to layer (b), wherein the layer (a) and/or the layer (a') if present and/or the layer (b) comprise a cross-linked easy opening blend which internally ruptures along a plane parallel to the layer where it is contained, said easy opening blend comprising, preferably consisting of: (i) an ethylene and acrylic acid or methacrylic acid copolymer and (ii) a modified EVA copolymer, or (i) an ethylene and acrylic acid or methacrylic acid copolymer and (iii) a polybutylene, or (ii) an ethylene homo or copolymer or an EVA copolymer and (iii) a polybutylene, wherein the cross-linked film, or the cross-linked part thereof comprising the cross-linked easy opening blend is cross-linked to a level such as to have: - a gel content of the whole film in case all the polymers making the film are toluene-soluble before cross-linking or of at least the part of it made of polymers which before cross-linking are toluene-soluble, not less than 40%, preferably not less than 60% by weight with respect to the whole film weight or to said part of film weight, respectively, measured in accordance with the test method reported in the present description; and /or - a MFI of the whole film, measured at 230°C, 21.6 kg, according to ASTM D-1238, not higher than 3 g/10 min, preferably not higher than 2 g/10 min, more preferably not higher than 1 g/10 min, even more preferably of about 0 g/10 min, and/or - a MFI of the whole film, measured at 230°C, 2.16 kg, according to ASTM D-1238, not higher than 2 g/10 min, preferably not higher than 1 g/10 min, more preferably of about 0 g/10 min. - an outer heat sealable layer (a), - a layer (b) directly adhered to the layer (a) or adhered to the layer (a) with the interposition of an optional layer (a') and, - an optional thermoplastic layer (c) adjacent and directly bonded to layer (b), wherein the layer (a) and/or the layer (a') if present and/or the layer (b) comprise a cross-linked easy opening blend which internally ruptures along a plane parallel to the layer where it is contained, said easy opening blend comprising, preferably consisting of: (i) an ethylene and acrylic acid or methacrylic acid copolymer and (ii) a modified EVA copolymer, or (i) an ethylene and acrylic acid or methacrylic acid copolymer and (iii) a polybutylene, or (ii) an ethylene homo or copolymer or an EVA copolymer and (iii) a polybutylene, wherein the cross-linked film, or the cross-linked part thereof comprising the cross-linked easy opening blend is cross-linked to a level such as to have: wherein the layer (a) and/or the layer (a') if present and/or the layer (b) comprise a cross-linked easy opening blend which internally ruptures along a plane parallel to the layer where it is contained, said easy opening blend comprising, preferably consisting of: (i) an ethylene and acrylic acid or methacrylic acid copolymer and (ii) a modified EVA copolymer, or (i) an ethylene and acrylic acid or methacrylic acid copolymer and (iii) a polybutylene, or (ii) an ethylene homo or copolymer or an EVA copolymer and (iii) a polybutylene, (i) an ethylene and acrylic acid or methacrylic acid copolymer and (ii) a modified EVA copolymer, or (i) an ethylene and acrylic acid or methacrylic acid copolymer and (iii) a polybutylene, or (ii) an ethylene homo or copolymer or an EVA copolymer and (iii) a polybutylene, wherein the cross-linked film, or the cross-linked part thereof comprising the cross-linked easy opening blend is cross-linked to a level such as to have: - a gel content of the whole film in case all the polymers making the film are toluene-soluble before cross-linking or of at least the part of it made of polymers which before cross-linking are toluene-soluble, not less than 40%, preferably not less than 60% by weight with respect to the whole film weight or to said part of film weight, respectively, measured in accordance with the test method reported in the present description; and /or - a MFI of the whole film, measured at 230°C, 21.6 kg, according to ASTM D-1238, not higher than 3 g/10 min, preferably not higher than 2 g/10 min, more preferably not higher than 1 g/10 min, even more preferably of about 0 g/10 min, and/or - a MFI of the whole film, measured at 230°C, 2.16 kg, according to ASTM D-1238, not higher than 2 g/10 min, preferably not higher than 1 g/10 min, more preferably of about 0 g/10 min.