Gitzo Series 5 - Really Big
This is a really big bag. I like it but I feel somewhat foolish putting it on my back and hiking through the woods because it is so big. However my 5531 is also big and I still have room for a small camera bag and a jacket in this bag. By the way this bag is really built well and much better than any of the Adorama bags which started pulling away from the strap supports and from the zipper within a month of purchase. I've also ordered a series 3 tripod with the equivalent smaller bag for longer hikes.