Want a FREE CCF Sleeping Pad?

Looks like it'd make a great winter pad.

From the website:

-R-value 21 unaffected by humidity

-Prevents 97% of radiant heat transfer

I know man!

I'm skeptical but who knows?

Ordered one myself.. Splurged and got the 5/8" thick x 24".

Seriously though – those specs if accurate will make this a great winter pad.

You're a wild man … livin' on the edge!

Yeah You're right – if the specs are close, I see more income in Lawson's future. Those who want durability, warmth, and COMFORT can pair this with an old BPL Torsolite or an Xsmall Thermarest and never look back. One pound gets you all that!

Worse case we'll have the beginnings of a putting green for the gear room. :)

Now that I'm sober, I think an R value of 21 with a thickness of 1/2" is probably not going to happen…. ;-)

A 1" pad with an R-Value 21 is only achievable in a vacuum. There is an old saying about a ? being born every minute.

The chance of a penalty for an inaccurate spec is what?

Yep, you're right of course. Do you suppose it might be 2.1?

Assuming we are still talking about a 1" thick pad, how would a vacuum influence the conduction of heat through a foam?

The padding question is one half-inch…

1" of PU foam averages an R-Value of 4.3; so, 1/2" would be 2.15.

I called them….

…they really believe it is R-21.

Some high-end aerogel is around R-20

Well that explains it I guess. A missing decimal.

If the weight is correct at 9 ounces I guess it's still a pretty good deal. First thing I'm going to do is cut it to the length of my Neoair short.

We'll see. It won't be the first or last time Ive thrown $12.99 out the window if it's a bust.

I sent them an e-mail with a link to wiki on insulation.

They "fixed" it.
Now the claim is R-3.6 for 1/2".

Well durn… I was hoping that a secret lab was working on a new material for NASA and mistakenly shipped a batch to BirdieBall and they, not knowing what they had, were selling it off at cost to get rid of it.

It's material they use for artificial putting greens, but it failed some spec so they are trying to unload it.

Still a good deal if it's somewhat durable, ya know?

Can be trimmed as needed, too.

Nope.
R value claimed of 3.6, uncompressed.

Cheers

Greg,

You asked, "…how would a vacuum influence the conduction of heat through a foam?"

The foam is a skeleton with the gas (air) in the void spaces providing most of the insulation. The pockets are typically much larger than the "mean free space" of an air molecule. To achieve an R-Value 21, the spaces would have to be air vacuums. Vacuums in void spaces have no air molecules to bump into one another for conduction heat loss.

Aerogel is a special case in which the pockets are smaller than the "mean free path" of air molecules to greatly reduce the probability of air molecule collisions resulting in conduction heat transfer.

Richard –
"A 1" pad with an R-Value 21 is only achievable in a vacuum."

So the assumption is that the cells in the pad would "out-gas", each becoming a vacuum. Otherwise, you'd have to assume that the pad would blow itself apart.

OK. I can go with that.

Thanks.

FYI, I got mine today and it is much heavier than they claim. They say the 24" one is 9oz, but mine measured about exactly 16oz with .2 oz for each of the 3 straps.

Eric

Still waiting on mine – was the shipping really $12.99? :)

It's been a while since I have worn a full-on sucker suit. I guess if nothing else it'll keep me humble.

I received mine Friday and it's big and thick. Haven't weighed it but I'm sure it's close to his.

Nice pad, nothing special except the price is good for the thickness. Pretty much just a CCF pad!

nice ccf pad for 12.99. there seems to be little air bubbles in the pad that you can pop if you squeeze. it is over 1/2 thick, and the top feels nice and will keep your air mattress/bag from slipping off.