A surgical buttress carrier assembly includes a buttress carrier and a buttress material. The buttress carrier has a body, a distal end, and lateral sides； the carrier has at least one distally extending post at the distal end, at least one first laterally extending post at a first lateral side, and at least one second laterally extending post at a second lateral side. The buttress carrier has an inner edge adjacent the distal end, and a proximally extending hook extending from the inner edge. The buttress material has an elongate shape, a distal end, and a first lateral side and a second lateral side； the buttress material has at least one opening at the distal end, at least one first side opening adjacent the buttress first lateral side, and at least one second side opening adjacent the buttress second lateral side.
