Good quality construction and an easy and effective base to shoot from while in the truck. I have not tried to use it in any other capacity yet but from the look and feel of it, it should be a stable base for shooting with my long lens from a hide or on the ground. If you are shooting from a midsize or smaller car, get the smaller version because the full size will not fit with a Wimberley attached and a long lens if your car window is less than 17 inches. Light and easy to pack when not filled. I have no complaints.

Advantages: strong build quality, light and packable, nice tacky feel to the underside.

Disadvantages: is one of the more expensive products like this on the market.

I use my vehicle as a blind for photographing birds and other wildlife with 300+ and 600+mm lenses. After trying various camera supports that clamp to the vehicle window, and cheaper flat bean bags that balance on the window sill, this is the best set-up I have found. It does not fall out of the window. It is quick to put into position and provides a stable rest that dampens vibration. For photographing from a vehicle window, I found it works best when resting the lens directly on the bag without using a tripod head. I have used it in a small sedan and a larger SUV. This beanbag is one of my photographic essentials. It is well worth the price.

Advantages: Compared with rigid, clamp-type, window mounts, this beanbag is much quicker to put in place, more versatile for camera movement, and dampens vibration. You can also hang this from a tripod to provide stabilizing weight.

Disadvantages: Relatively expensive, but it is very well designed and well made. When fully loaded with beans, it is fairly heavy, but this weight is what makes it so stable.