Lowepro Pro Trekker BP 450 AW II
First off this bag is way bigger than i expected it to be, but i just managed to get all my equipment inside.The bag is very spacious with plenty of dividers/options for storing bits'n'bobs. There are numerous points on the outside of the bag to connect other pieces of equipment and the two straps included are very handy for holding my tripod, which has it own little carry cup included in one of the zip compartments. Not had it out in the rain yet so can't comment on the water repellency bit if it does get a little moist out i can always pop on the included rain cover that is stowed away in its own little zip compartment on the bottom on the bag.So glad i purchased this bag over the 350 as i don't think i would have managed to get all my stuff into it, i managed to get DSLR body with 300mm F4 IS attached, 70-200 F4 IS, 50mm prime, 18-135mm IS, 55-250, 1.4 converter, 2x converter, 3D leafy camo suit and rain sleeve for 300mm all in the main compartment, still room for more.Overall happy with this backpack.*update* 07/10/2020Had this backpack for a couple weeks now and have been out with it a lot, it is very comfortable to wear/carry, has more than enough room for all i need to carry. I purchased another lens Sigma 150-600mm and can confirm that it fits in no problem with a few inches to spare.So glad i did a little reasearch before purchasing a larger bag/backpack as this one ticks all the boxes for me and will probably be my camera bag from now on.*update* 22/01/2021I have upgraded my camera body to a 1DX Mk II and this with the Sigma 150-600mm fits no problems at all, so now have 1DX Mk II with Sigma 150-600mm attached. 300mm F4 IS, 70-200 F4 IS, 50mm prime, 1.4 converter, 2x converter, 3D leafy camo suit, rain sleeve for 300mm and 150-600mm, 2 scrim nets and strap all in the main compartment, still room for more, i can get some sandwiches and other small snacks in as well, i carry my tripod on the side utilising the two straps provided, a 1 Ltr flask/bottle of water in the side pocket, in the main front zip compartment used for tablet/laptop i have my 16" Macbookpro and some related cables.Still glad i bought this bag over others as i am still extremely happy with it.