Zzzzleeping Systems Snooze & Updates

Odd Man

Thru Hiker
My MS Office doesn't work anymore in Catalina (and I'm not buying a subscription service) so I'm trying to get grips with Apple's Numbers (spreadsheet), so I'm not as handy with this as I'm with Excel, but here goes. With a bit of effort, one could add price of the pad to get a weight/R-value/price ratio ie what's the lightest, warmest pad for the price. Getting a bit geeky now...

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craige

Thru Hiker
This new standard must be flawed though? I'm fairly sure my exped hl and sts ul insulated are similar warmth to the xlite I had. Maybe the reflective layers are messing with things? I mean 4.2 is really a getting into winter ratings and I've seen plenty reports they aren't great warm much below freezing.
 

Clare

Thru Hiker
It looks odd doesn't it. Under the old ratings the Exped Synmat UL was just a bit less R than the woman's XLite, so it was really a question of which style mat you prefer and paying a weight penalty for the comfort. Under the new ratings the women's Xlite has nearly double the R of the synmat which scores really badly. It makes the synmat UL look very poor on both R value and weight. But they are widely loved.
 
Nice work. Ta.
Read on BPL I think, to get something like the 'true advertised' thermo value of your bag/quilt your mat must be at least R 4. Recently using my new Cumulus quilt 'rated' to 6 on an Xlite I get this with lightish thermals. Sort of lead me to keep my Xlite rather than go an Xped -even though I wanted to try the Expeds comfort. I bought it under the old regime but as an Xtherm owner as well, it always felt 'warm' to me in comparison. Warmer that is than I might expect at R3.2. Know someone that uses the Xlite with the 2mm reflectix stuff ski touring every winter. Potato chips ahoy!?
Although can't say that anymore- it's pretty quiet.
The Xtherm feels far warmer than the STS equivalent (which has gone down from well over R5 to just R4) which I had and sold.
 
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Heltrekker

Section Hiker
Interesting, but I go lightweight over R value, and if it's really cold slip my emergency blanket on top of my mat (Xlite) - much warmer, although the noise is a bit of a downside.
 

FOX160

Thru Hiker
My MS Office doesn't work anymore in Catalina (and I'm not buying a subscription service) so I'm trying to get grips with Apple's Numbers (spreadsheet), so I'm not as handy with this as I'm with Excel, but here goes. With a bit of effort, one could add price of the pad to get a weight/R-value/price ratio ie what's the lightest, warmest pad for the price. Getting a bit geeky now...

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View attachment 20905

Check online for in store free tuition courses or the examples on how to on there website.
 

Odd Man

Thru Hiker
An interesting concept, but surely it won't be the best ultralight option as for most users, most of the time, there will be 'unused bits' of the bag.

Maybe it's transitional kit from mummy bags to wide quilts? Or maybe for summers it's worth while opening the zips for better airflow and winters keep the bag as tight as possible to minimise the internal space that needs to kept warm.
 

Clare

Thru Hiker
£53.90 | Poncho Coat Outdoor Camping Warmth Small Quilt Blanket Water-resisitant Sleeping Bag Cloak Cape with Hat for Adult Men Women
https://a.aliexpress.com/_BTyLbi


New asta gear down quilt/poncho. 900g. For the poncho lovers. Standard quilt plus poncho at a good price.
 

Whiteburn

Thru Hiker
A very good article that should educate a lot of folk, of particular note to me was that the testing required the test manikin "wears a relatively warm long-sleeved top, long underwear, knee socks, and usually a cold weather mask" and the sleeping mat used in the test has an R value of 4.8. No surprise to me that folk who choose to sleep naked on an uninsulated sleeping mat or thin CCF don't experience the full benefit of their SB.
 
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