PBL Sandbags Photography Photo Video Light Lighting Double Zippered Set of 4 Heavy Duty Steve Kaeser Photographic Lighting Four (4) Sandbags, saddlebag design with heavy duty carry handles. All metal zippers, not plastic like other sandbags. Rated for 18lbs each bag. Made of extremely durable heavy nylon material. Can be filled with, sand, gravel, even nuts and bolts. Heavy duty carrying straps. Use with light stands, tripods, boom arms.