A buttress material for use with a surgical staple cartridge. In various forms, the buttress material comprises a buttress body (6102) that is sized to be operably received on a deck of the surgical staple cartridge. The buttress body includes at least four edges (6110, 6140, 6150, 6160) and a central portion (6152). At least two of the edges have a plurality of edge notches (6114, 6118, 6122, 6126) formed therein. The central portion (6152) includes a plurality of cutout openings therein.