The bag is super nice with an outer and an inner bag for weather fluctuations. I have not used it yet, but have no doubt it will be plenty cozy. The inner and outer bags are held in place using elastic and toggles, great idea! They both have nice zippers. The only downside is that the bag to contain them is a bit small. I cannot even shove the entire sleeping bag into it, never mind rolling it and placing it inside. Not a huge deal for me, just thought it might be to someone else.