Big Ag insulated air-core is rated to about 15* allegedly, can't verify but has great reviews, costs about 60.00 on sale. packs about Nalgene size, little bigger. If you're looking to drop a little money on it you can look at Exped's UL down or syn mats. Syn 7 seems good to around 30 from reading reviews. Downmat rated at 6R for -15*, great great reviews and packs small and is light. Best two bangs for your buck I'd say.
UL series also makes several sizes, small size could be right up your alley.
"I ain't here for a long time, I'm here for a good time"
- George Strait
Last edited by Slo; 03-03-2013 at 17:03..