Z Lite? Temp?

[jons4real]

I'm thinking about trying to use a Z Lite for a bottom layer. I would just really like to know what the temp rating for this pad is. I can't find any info on it any where. It does have a 2.2 R value rating but what does this mean in the real world.

[Duffy]

Mine is fine down into the low 40s, with a homemade SPE. When the temp drops below that I get creative and put something under the Z. Reflectix works good for this.

[jons4real]

Thanks duff