Really excellent. Can hold so much and with so many interchangeable inserts it can be made to suit your specific equipment and requirements. The zips are perfect for a luggage lock for extra security. All my camera equipment can now be held in one place including several lenses and many filters, spare parts etc. The tripod pocket and strap is great as most are too small for a good quality tripod. I can't really comment on how comfortable it is personally but my friend said its really comfy, however it fits on the back of my wheelchair perfectly and the chest strap can be done up on my chair to make it so it cannot be lifted off the back of my chair easily so stays secure. It's not 100% waterproof but is water resistant however it comes with a waterproof cover for the inevitable rain here in the UK.I think this is a fantastic product and am glad I decided to replace a different one I was brought as a gift for a similar price that didn't fit in anywhere near as much. The separate laptop sleeve is also a really good addition as it means camera and editing equipment can all be carried within the same bag safely and securely. I am really impressed with this bag and it is far better than some for over twice the price