I purchased the Fastpack 100 a few months ago. I chose a red one so it's girly and not an obvious photography bag when out and about. It's a very nice size, very comfortable as a backpack, but sits as easily slung on the shoulder too. There's good padding on the back and straps. All straps adjust and one includes a handy Velcro'd mobile pocket and the other has a loop so you can attach an additional case for an MP3/other. There's a small carry handle/loop on top. In all it's a well made, quality product - despite the price! The camera section easily holds a Canon DSLR with a 28 to 250mm attached and a 10 to 22mm. in the additional lens space. The padding can be reworked with velcro fittings and there's 2 flashcard pockets on the flap. The all-round zipper is sturdy with 2 zip toggles. A separate front security flap (held by 2 spring locks) covers the front of the camera section & stops it opening more than needed. I can get my camera out with ease - it's great. Under the security flap there's also a pocket that easily holds my purse, keys & cards safely. The top section, again with 2 zipper toggles, has inside a pocket with velco closing - houses 2 x canon batteries; 2 pen holders (I've taken the middle stitching out and it now holds another 2 x batteries); plus a mesh net (holds body & lens caps + used cards with ease). The central area stacks filter boxes, air blower aerosol and still has room to spare for a roll-up shower jacket. There's another pocket on the outside of the top section again holds sunglasses, handy packs of tissues, tiger clothes, etc. Not to forget the side net for a waterbottle/other. For such a small bag it's a bit of a tardis. The only downside is the omission of a separate waterproof cover. I love this bag and its ideal for my kit, one of the best purchases I've made. If you have 3 lenses consider the next sizes - unless you're prepared to go without your roll-up shower jacket! This is the only review I've ever given I'm so impressed.