>>853224Military bags are very heavy and bulky. Mainly because the infantry travels with a giant support contingent which you most likely wont have.
I'd reccomend something like
https://www.amazon.com/ALPS-Mountaineering-20-Degree-Sleeping-Regular/dp/B00G6HUDQM/ref=sr_1_2?ie=UTF8&qid=1473350534&sr=8-2&keywords=alps+sleeping+bag and maybe a medium sized compression bag or (and I'll get flak for this) a medium weight dry bag that can be used as a compression bag.