I love that the lunch bag detaches with Velcro — so convenient for grabbing it and heading straight to a meeting. Plenty of room for everything else I need for a day at the office or a quick hike.
The detachable lunch bag is the best part, I just rip it off the velcro straps when I get to the office and leave the backpack at my desk. Fits my lunch, a water bottle, and my laptop with room left over.
Took this on a day hike and the 25L size swallowed my water bottle, jacket, and snacks without feeling bulky. The velcro straps on the lunch bag held tight, and it popped off easily when I just wanted to grab lunch.