I bought the TOPLOADER to not always having to bring my large camera bag. It should my Canon EOS 50D fit with battery grip and CANON EF24-105 - nothing more. And this task fulfilled the TOPLOADER perfect! The operation is the way I wanted it: on the bag slung raise the zipper, open the cover, take out the camera - take pictures. The processing - and material quality of the top-loader is, like the other products from Lowepro also very high. Additional storage space for additional cards, batteries or cleaning cloths is, though not abundant, available. In conclusion, I can only say that the TOPLOADER for my desired requirements is ideal and I would buy it again!