This is the perfect size daypack for a 13" or so laptop and your EDC gear. It's not a laptop bag per se so there's no padded compartment, but I slide my laptop into a protective sleeve for JE Tech (which is AWESOME) and it's good to go. Plenty of room for your daily work, school or workout gear and the main pocket fits a G17 in a holster quite nicely in case you need to do some off-body carry for a minute. When loaded up the pack is comfortable, the lumbar pad sits just about right for me at 61 and obviously adjusting the straps will sort it out for someone sized differently. The pack is well-made and seems durable and there are several reviews out there on this one. Its hard to beat for the price if you're looking for a commuter/walking around pack with the capability to be expanded via the PALS webbing. I added my First Aid kit to it on the side opposite of the bottle holder and it balances nicely with my coffee tumbler.