Giottos BLC210 Sandbag (Black) Medium size holds 1.1 lbs. per side total of 2.2 lb. Can connect to additional sandbags Made of 1680d nylon double jacquard fabric Internal Frame Internal frame Holds 1.1 lbs of sand per side, 2.2 lbs total Can be used with steel shot for even greater weight Connect sandbags together for high-weight needs Includes handle attachment and cord to tie to center column of tripod