I'm a sprawler and this has been the perfect bag for me. Temp rating has felt accurate, although I haven't taken it all the way down to its rated temp yet. Because of the stretch feature I'm sure I could easily wear a lot of extra layers without compressing insulation. Mine weighed exactly what Montbell claimed which is a bit surprising. The shell material feels very fragile but has held up well thus far. My only complaints are that the zipper sometimes gets caught on the shell if you aren't careful, not a big deal and a common problem with bags. I wouldn't hesitate to buy this exact same bag if my existing one was lost or damaged, and I doubt I will ever buy any bag that doesn't have the super stretch feature.