I bought this as a replacement for my Lowe Pro sling bag Since I usually cycle with my camera, I needed a comfy bag that would take my camera and zoom lens (Nikon 28-300mm) with space for other bits for my bike - such as a spare inner tube, my spanner kit, puncture repair kit, small mini cycle pump and a few other bits. I was able to squeeze all of that in with room for other bits such as my two lens hoods.It has enough pockets to secure memory cards or other loose items.So based on the marketing photos I knew it would be perfect - In reality I purchased this more to do with comfort and padding. So after cycling around 26 miles with my camera and all the other junk for my bike (quite weighty to be honest!) - the padding on the bag and straps managed to support the weight well and not irritate my body such as back, arms or chest where it has two chest straps.It's definitely up there in terms of build quality with my Lowe pro bag and confident my camera kit is safe with the sufficient internal padding.. However that doesn't mean you can throw your bag around as they do at the airports.. Its perfectly fine if say for example you accidentally drop your bag from shoulder height or if you fall off your bike and stumble a few meters on dirt like I did.Only gripe is (my part really), I thought it was their bag that opened on the inside. You may want to consider that if you want a bag a bit like a sling bag where you don't have to take it off, but swing it around to access your camera: Dslr Backpack Waterproof,K&F Concept® Multifunctional Camera Backpack DSLR Bag Rucksack 900D Nylon Camera Bag with Waterproof Rain Cover for Laptops Tablets Canon Nikon Camera Accessories Black Large Size(18.5* 13.0* 7.1*inch) for Men/Women