Your question can not be answered by any one packer. I personally am packing for a 2 nighter with a buddy and I feel my 85 liter is too small for all the stuff I want to have with me. I stuffed my tent all the way to the bottom and then packed around it and I ran out of space fast once my sleeping bag, bag liner, inflatable pillow, one change of clothes, and a couple small items were in there. I haven't even squeezed my sneakers, dry box, water, or food in there. I will be repacking before I leave because I am certain I am wasting space in there somewhere but I am not sure where!