In reply to FreshSlate:
> Give me a close cell foam mat lighter and with a higher r value that a thermarest x therm.
It's a good point. I wasn't familiar with the mat you mentioned so I googled it. Other than the obscene price tag, it looks good on paper and at 450g very light for its r value. To get an R value of 5 with ccf mats you would probably be needing two of them. When trimmed to body size and shape (like the x therm) it's probably about 100g heavier so you win that round. Well played sir (ma'am?).
However £140 for the x therm or £20 for two ccf mats...
Disclaimer: I own two inflating mats and two ccf mats. I like them all. There are definitely benefits and drawbacks for both.
Post edited at 00:37