It's an UrbanGear U60 bag that I bought for $75. The back is padded quite well. I hauled all my gear around Chicago for a week (12 hours a day) and I was fine. It held my gripped 50D, 70-200 f/4 L, 24-70 f/2.8 L, and 10-22 with all their hoods. Also fit my 430EX flash, all my cards, batteries, and filter. It has two waterproof, zippered pockets. The ONLY thing wrong with this bag is that one of the zipper tabs broke halfway off. I'm asking $50 for it. Let me know. Thanks!

http://www.flickr.com/photos/itshotinhere_imonfire/5307621550/http://www.flickr.com/photos/itshotinhere_imonfire/5307621550/ by http://www.flickr.com/people/itshotinhere_imonfire/, on Flickr

http://www.flickr.com/photos/itshotinhere_imonfire/5307621716/http://www.flickr.com/photos/itshotinhere_imonfire/5307621716/ by http://www.flickr.com/people/itshotinhere_imonfire/, on Flickr

http://www.flickr.com/photos/itshotinhere_imonfire/5307029111/http://www.flickr.com/photos/itshotinhere_imonfire/5307029111/ by http://www.flickr.com/people/itshotinhere_imonfire/, on Flickr

http://www.flickr.com/photos/itshotinhere_imonfire/5307622078/http://www.flickr.com/photos/itshotinhere_imonfire/5307622078/ by http://www.flickr.com/people/itshotinhere_imonfire/, on Flickr

 

Price drop: $40!