An apparatus, comprising: (a) an end effector, wherein the end effector comprises: (i) an anvil, and (ii) a lower jaw, wherein the anvil is configured to move toward and away from the lower jaw; (b) a cartridge, wherein the lower jaw is configured to receive the cartridge, the cartridge comprising: (i) a housing, (ii) a plurality of staples disposed in the housing, and (iii) a deck disposed over the plurality of staples, the deck defining a plurality of apertures, each aperture being substantially disposed over each staple, wherein the end effector is operable to drive the staples through the apertures of the deck toward the anvil; and (c) a buttress assembly configured to be attached to either the anvil or the cartridge, wherein the buttress assembly comprises: (i) an adhesive layer configured to adhere to either the anvil or the deck of the cartridge, (ii) a film layer having a first side and a second side, wherein the first side is attached to the adhesive layer and the film layer comprises a plurality of holes extending from the first side to the second side, and (iii) a buttress body attached to the second side of the film layer such that the film layer is interposed between the adhesive layer and the buttress body, wherein the buttress body comprises a three-dimensional mesh. (a) an end effector, wherein the end effector comprises: (i) an anvil, and (ii) a lower jaw, wherein the anvil is configured to move toward and away from the lower jaw; (i) an anvil, and (ii) a lower jaw, wherein the anvil is configured to move toward and away from the lower jaw; (b) a cartridge, wherein the lower jaw is configured to receive the cartridge, the cartridge comprising: (i) a housing, (ii) a plurality of staples disposed in the housing, and (iii) a deck disposed over the plurality of staples, the deck defining a plurality of apertures, each aperture being substantially disposed over each staple, wherein the end effector is operable to drive the staples through the apertures of the deck toward the anvil; and (i) a housing, (ii) a plurality of staples disposed in the housing, and (iii) a deck disposed over the plurality of staples, the deck defining a plurality of apertures, each aperture being substantially disposed over each staple, wherein the end effector is operable to drive the staples through the apertures of the deck toward the anvil; and (c) a buttress assembly configured to be attached to either the anvil or the cartridge, wherein the buttress assembly comprises: (i) an adhesive layer configured to adhere to either the anvil or the deck of the cartridge, (ii) a film layer having a first side and a second side, wherein the first side is attached to the adhesive layer and the film layer comprises a plurality of holes extending from the first side to the second side, and (iii) a buttress body attached to the second side of the film layer such that the film layer is interposed between the adhesive layer and the buttress body, wherein the buttress body comprises a three-dimensional mesh. (i) an adhesive layer configured to adhere to either the anvil or the deck of the cartridge, (ii) a film layer having a first side and a second side, wherein the first side is attached to the adhesive layer and the film layer comprises a plurality of holes extending from the first side to the second side, and (iii) a buttress body attached to the second side of the film layer such that the film layer is interposed between the adhesive layer and the buttress body, wherein the buttress body comprises a three-dimensional mesh.