I like my 2 litre outdoor sling but I don’t love it. I like the size, that’s it’s waterproof (I hope), the slot for my phone and the versatility of sling vs fanny pack. I wish it had a 2 way zipper, and an inside (or outside) extra zipper pocket for more secure storing of items. Right now it’s just one big pocket with some loose mesh organizing pockets that don’t seem very useful.