Decent 60 liter size with a large interior main area. Medium outer zippered are and lower zippered compartment for sleeping bag and such. Small lower divider at bottom of main inner compartment. 2 mesh side pockets for carrying water bottles. There is no rain cover and no water bladder portal. The shoulder straps are padded and fully adjustable. A few sets of cinch straps for outer gear if needed. Comes with a handy little light you can clip on to the pack as well.