4Xpandable

The bag's features work perfectly for me. I'm able to carry my 600mm f/4 set up to shoot or collapse the bag and carry it in the storage position. The "fold flat" is great for air travel as it allows me to pack it in my checked luggage. If you "hike" to your shooting location, I'd suggest getting the harness and waist belt. Another great product from LensCoat.com.

This bag works just as advertised. I use it to store my new Sony a1 attached to a Sony 400mm prime with the lens hood on with room to spare. It would be even better if it had a zipper to seal it up if I need to. The straps are sturdy and the pockets are handy for carrying a little extra gear. I put another towel in the bottom for extra padding. I may get the back pack straps now that I know this bag is strong enough to carry out away from the truck.

Brilliant design and construction. I was amazed at just how well this carry case is built and thought out.

I purchased this case for my SONY 400mm f2.8 lens when we travel in small aeroplanes into the less accessible areas such as the Okavango Delta (Botswana) and Zambia etc.

The case is deep enough to accommodate the lens + 2x converter and the camera body all assembled with is great.

I found that the padded collar which secures the rig inside the bag to be a "genius" move! Well done on that.

Just a suggestion. I feel that the padding of the case could be thicker to absorb a shock more successfully.

This bag is quite versatile and will serve me well, both as a carry on for my lens and pro body (detached), and then expanded to protect my system while in a safari vehicle, but be ready to shoot. I have not used this in the field yet, but it looks like it should work well. Expanding and collapsing are quite simple.