At around 30cm wide with a moderate amount in the side pockets, this K&F Concept camera rucksack is smaller than a lot of rucksacks and thus, suits photographers who don't want to have to lug around a large bag when the situation says that there is no need to. Additionally, a smaller rucksack allows you to carry a bag over your shoulder without it getting in the way. At 38cm tall and 12cm deep, empty, it weighs only 934g with the stretch-waterproof cover that comes with it.
The outside of the rucksack is made from a tough, closely-woven material as you can see in the photographs. The zips of the two pockets on the front are heavy duty although one of them is covered by the front material but the other zip is exposed. There is an elasticated pocket on each side and above the left pocket (as you wear it) there is a strap with a clip that you can use so that you can carry a tripod.
The face that goes against your back also has a wide, elastic strap that runs from one side to the other so that you can put the rucksack on top of your luggage, threading it over the long handle of wheeled, hand luggage.
Inside, the lid has a pocket in it so that you can put a laptop in there if you wish - there is a wide elastic Velcro tipped strap to hold the pocket's contents in place. In the body, there are a number of sections that you can position yourself and hold in place with Velcro so that your equipment can be kept safe. You also get two elastic straps that you can use to hold a telephoto lens in place as well.
I tried this rucksack out with an SLR, a DSLR and even a mirrorless camera with a gimbal and as you can see from the photographs. There isn't quite enough room to put a medium format system camera in there but you would use a different case for that anyway.
This bag fits all of your daily carry and is a bit smaller, meaning that you have enough room on your shoulders to carry other things, meanwhile, there is enough room inside it for enough of your equipment to make it worthwhile.