Do you know how tightly the selkbag rolls up? It looks like it might be a bit too bulky to make it convenient for back-packing overseas (I’m thinking luggage constraints).
It doesn’t pack as tightly as down but does pack nicely into it’s compression stuff sack. The Lite version shown here will pack better than the full version as there is less synthetic filling.
I don’t have the exact dimensions when packed but if you are space constrained, I might consider a down bag.
Hope that helps! Amy