This weekend my new EE quilt will get the 30F temp ratings tested, we're headed up to the mountains for two nights and the lows are forcasted at or around 30f both nights. I'm pretty sure I'll need to sleep in my long johns and LS base layer shirt, socks and balaclava, and worst case I can put my jacket on or *worst worst* case I have a SOL emergency blanket. I'll report back!