I really like my Patagonia Black Hole (25L) [1]. It's pretty robust, looks nice, and fits everything I need quite easily. I have used it for sport but it's real

I really like my Patagonia Black Hole (25L) [1]. It's pretty robust, looks nice, and fits everything I need quite easily. I have used it for sport but it's really poorly suites for it as the back is not very aerated and it doesn't have a waist strap. Great for city life though. [1]: https://www.patagonia.com/product/black-hole-backpack-25-liters/49296.html?dwvar_49296_color=BLK&cgid=luggage-black-hole-bags#tile-8=&start=1&sz=24 https://www.patagonia.com/product/black-hole-backpack-25-lit...