You might look at these. http://www.exped.com/usa/en/product-category/mats/downmat-7-m. Either the 7 or 9.They are suppose to be warmer.

Both the Therm-A- RestNeoair XlTT and XTherm come in a wider version that is 25"vs 20 for" a little bit more money

If God wanted you to walk and carry things on your back, He would not have invented stirrups and pack saddles