A system for forming a composite compressive component for a negative pressure wound therapy, NPWT, dressing for treating a deep abdominal wound, the system comprising: a first compressive material having a first compression ratio, the first compressive material including a first pattern of concentric perforations configured to form at least a first detachable compressive component segment, wherein the first detachable compressive component segment has an elliptical shape; and a second compressive material having a second compression ratio different than the first compression ratio, the second compressive material including a second pattern of concentric perforations configured to form at least a second detachable compressive component segment (238"), the second detachable compressive component segment (238") including a through-opening configured to receive the first detachable compressive component segment in a friction fit, wherein the second detachable compressive component segment (238") has an elliptical ring shape; a third compressive material having a third compression ratio different than the first compression ratio and the second compression ratio, the third compressive material including a third pattern of concentric perforations configured to form at least a third detachable compressive component segment (242"'), the third detachable compressive component segment including a through-opening configured to receive the second detachable compressive component segment (238") in a friction fit to form the composite compressive component, wherein the third detachable compressive component segment has an elliptical ring shape, wherein the first pattern of concentric perforations, the second pattern of concentric perforations, and the third pattern of concentric perforations are the same pattern of elliptical concentric perforations, and wherein the first compressive material, the second compressive material, and the third compressive material are a felted foam. a first compressive material having a first compression ratio, the first compressive material including a first pattern of concentric perforations configured to form at least a first detachable compressive component segment, wherein the first detachable compressive component segment has an elliptical shape; and a second compressive material having a second compression ratio different than the first compression ratio, the second compressive material including a second pattern of concentric perforations configured to form at least a second detachable compressive component segment (238"), the second detachable compressive component segment (238") including a through-opening configured to receive the first detachable compressive component segment in a friction fit, wherein the second detachable compressive component segment (238") has an elliptical ring shape; a third compressive material having a third compression ratio different than the first compression ratio and the second compression ratio, the third compressive material including a third pattern of concentric perforations configured to form at least a third detachable compressive component segment (242"'), the third detachable compressive component segment including a through-opening configured to receive the second detachable compressive component segment (238") in a friction fit to form the composite compressive component, wherein the third detachable compressive component segment has an elliptical ring shape, wherein the first pattern of concentric perforations, the second pattern of concentric perforations, and the third pattern of concentric perforations are the same pattern of elliptical concentric perforations, and wherein the first compressive material, the second compressive material, and the third compressive material are a felted foam.