Grizzly Polystyrene, Poly Styrene beads, balls to fill the Grizzly MEDIUM Camera Bean Bag, Photography & Video Bean Bag, Tripod Bag, Camera Support & Sandbag, Camera Beanbag, Spotting Scope Support ENOUGH FILL FOR ONE MEDIUM GRIZZLY BEAN BAG. Light Weight Poly Fill for the Wild Grizzly Medium Camera Bean Bag For those who travel or hike a great deal, the light weight Grizzly Bean Bag will attach to your belt, your backpack or gear bag. Use the bean bag on your car window, a fence, on rocks and fallen trees. On the ground, it is great to hide from wildlife or for close-ups. If you want a little more weight, add a few beans or some rice Easy fill, just open the zipper on the Medium Bean Bag