This K&F Concept Camera Backpack gets my 5**** rate - here's why:

It fits the new EU requirements for free on-board airline underseat luggage that mandates a maximum size at 40 x 30 x 15 cm across all airlines operating within, to, and from the EU.

In addition - at 38x27x13 cm it fits INSIDE an carry-on bag for Easyjet/BA - leaving room for a laptop, disk drive, collapsible soft boxes, 2x telescopic light stands etc - see my attached photos. That's good for air travel - but also for taking public transport to a shoot.

I like the customisable padded dividers. It fits my Nikon basic kit of 1x body, 3x lenses, 2x flashguns plus trigger sets, lots of filters as well as an i-pad and holds them snug. It takes a huge amount of micro 4/3 kit - but then it doesn't have such a snug and safe hold of the kit as the spaces and straps are more optimised for bigger cameras/lenses so it isn't my first choice for that.

I like the way I can unzip on 2 sides to make a small flap opening at the top - meaning I can quickly pull out the camera and basic lens if I see a shot - without disturbing the rest of the kit.

The materials look durable and shower-resistant. It doesn't have a pull-out rain cover as you get on the top-spec' Lowepro camera case rucksacks - but those cost a load more (the Lowepro Flipside Trek 450 is near £180!)! Furthermore, I got a basic rucksack rain cover from amazon - search for "rucksack rain cover" and today there were 359 to choose from at £3.49 and upwards - which does a great job.

In summary - its a stylish, understated design, has ample storage for a day out or a holiday trip, and ergonomic comfort for long shoots or travel as the straps are wide and well-padded and adjustable. The value for money is exceptional!