This is the second SkimmerSack that I've purchased. I bought this one to reside in our second vehicle, which will mean I don't have to shift the bean bag from one vehicle to the other (and remembering to do so). It's a great bag in all respects, and rock solid when shooting from a vehicle.

Advantages: --solid platform for even the longest lens
--conforms to both the window frame and camera lens

Disadvantages: Takes several pounds of beans to fill it up...more than I'd ever guessed.

Durable material

Disadvantages: Heavy, when filled enough to utilize top as a platform. Not as handy as I had hoped.

Initially I was disappointed in the product as it looked like cheap materials had been used for a bean bag costing $70.00 with no filling. However, I was surprised when I filled it with roughly 15 pounds of long grain white rice.

Advantages: It is very stable saddled over my toyota tacoma window and I have been able to take wildlife photos that would not have been possible without it. It is also very fast to set up for wildlife when you see that perfect shot.

Disadvantages: I have found no disadvantages to owning this product.

Very well made. I've not had a chance to use much, but can see instances where it will be very valuable. The only reason I gave it 4 stars is the price. Otherwise it's well designed and made.
PS the price was cheaper here than any I'd seen.

Advantages: Great rest for camera/lens in certain situations.

Disadvantages: Am using rice as a filler, is a little heavy for lugging around. I'll use it mostly on or near my car so won't really matter.

I Like it! alot.... It doesn't move around like other contraptions I've tried, I like the quality and fabric/materials used. I typically when shooting from the 4Runner, leave my window down, and I felt safe leaving the SkimmerSack in place so that all I had to do was grab my camera/lens when scouting for wildlife subjects.