I have used this bag constantly for numerous events for 3 years now. It is my go to bag for everything, When I'm hitting the boat for a few days offshore I can easily pack about 3 days of clothes (underwear, T-shirts, & shorts) I usually wear jeans as I board, this allows more room for other items while still keeping the pack "baggy/loose". If you're going for a stuffed pack to get to destination and unload, then this pack will fit a solid 3 days worth jeans, tac-pants, light jacket. It may "balloon" a little. The "rib-bow" system it has is amazing this pack will never lay flat on your whole back and create a swamp of swet. it has a very firm seated position on your back. I have some packs that I can fit enough supply in for 9 days and 3 different activities, this is not one of those bags... But if I'm going out for a 1-3 day single event/activity this is what I grab! I also use this for college, it fits my laptop and all it's accessories along with the obvious supplies.