Patent ID: 8235631

Claim:
A bag for retaining structures, comprising: a plurality of cells aligned side-by-side in a continuous manner and configured to be filled with a filling material, wherein each cell comprises: a bottom wall, a first side wall, a second side wall, a back wall, and a front wall, the front wall being longer than the back wall; and wherein the first and second side walls each include: a first corner located where the back wall connects with the bottom wall, said first corner being substantially 90 degrees; and a second corner located where a respective top edge of each side wall connects with the rear wall, said second corner being substantially 90 degrees, wherein the second side wall of a particular cell is a shared wall such that the second side wall of the particular cell is a first side wall of an adjacent cell, and wherein the shared wall includes one or more protrusions that extend into the particular cell or the adjacent cell.