This is one of those small 10 litre (actually now I think that they only come in 8 litre size) bum bag type things that you wonder just how comfortable its going to be once you get out on the mountain or moor. To start off with, there is not all that much that you can do with 10 litres once you have your waterproof, some water and an SLR in there so don't go thinking that you can fit an awful lot more in there if you are a serious camera person, also, there is no where to strap trekking poles or mono/tripods to it, which is a bit of a bummer. however, I have used it quite happily as a day sack on numerous occasions whilst others have been encumbered with sweaty backed rucksacs. The zip closure is good on the main compartment, being a heavy duty 2 way zip with a massive opening- easy access, the second pocket is a sort of small bellows pocket on the front, it is a zip pocket but only one way. After some experimentation I found that the best thing to do was to stick all my stuff, ie.first aid kit, food and water (I use a camel back inner, it moulds around the back a lot better than a sigg bottle) in the main compartment- and anything else that I happen to want, wallet, micropore and small thin things- in the second, much smaller pocket on the back (a camera fits in there easily, but not if it is an SLR), energy food in the mesh side pockets and a map in the bungee at the back. If you then keep your water proof on, put the bag on over it and then undo the coat, pull your arms out of the sleeves and tie them around you, it doesnt fall out of anything, and you can put it on again without taking off the bag. genius! The strap system is good and keeps the bag very stable on your hips, it has the main strap to centre it where you want it, and two sets of compression straps to balance it and stop any bounce. The great thing is that you can storm off for the day, either walking or running and know that you will be sweaty ba ck free for the whole day. However, if you overload it it does become uncomfortable and can bounce around at speed, generally, if you don't overload it then it is a great bag, but I would only recommend it for spring to early autumn use, otherwise you really would not be able to fit all the kit you would need into it for really bad weather.
The lightweight option. This beltpack keeps your back free, and carries light tops, camera, snacks etc.