The Apex Bean Bag - Realtree Max-4 is a versatile, solid support for a camera, especially one mounted on a gimbal or ball head. Designed for DSLR cameras with lenses up to 800mm, the Bean Bag has a U-shape that makes it perfect for mounting on any narrow or round surface, such as a fence, a car door, or a tree branch. (The Bean Bag is designed for windows that measure 17" or higher.) Inside the "U" is a high-tack surface that keeps it from slipping.
Constructed of tightly woven heavy-duty nylon pack cloth and sewn with high-strength polyester thread, the Apex Bean will simply not leak, regardless of the material used. The Bean Bag features an easily accessible fill zipper that allows you to customize the amount of filling that's inside the bag. A weather-resistant flap protects the zipper. At about 14 lb when filled (depending on the filler, of course), it's far from flimsy, providing plenty of stability.
Inside the bag there's an aircraft-grade aluminum plate that, with its 3/8"-16 screw, supports the attachment of a head. The plate is removable, so you can use the Bean Bag as a traditional, soft bean bag support.
You can also invert the Bean Bag to nestle a telephoto lens into the "U" portion, which provides non-slip support. This is perfect for shooting from a flat surface such as a car hood or the ground.