This is such a great piece of gear! You can put almost anything in it. You can strap this to your backpack/rucksack with the MOLLE strap/snap system and keep dam near your whole sleep set in it.
You can also buy a few of these, attach them and double the packing space in your backpack/rucksack right there! Boom!
MRE/Mountain food fits in this as well! You can fit a whole bag of potatoes in one of these bad boys and survive a week off of it C'mon!
Bulk discount! 1 for $8, 2 for $15, 3 for $18, 4 for $20