Yep, I use one UK - probably as it wasn't the wisest choice for lightweight insulation on my first ever camping purchase. But it's fine - if bike packing, I use a strip of 3mm closed cell polyethylene foam beneath it (been ok down to c. 2°C with ice on the tent). If thru-hiking, I prefer better insulation of a cutdown z-fold mt500 mat from Decathlon beneath it. Often pitch on brambles, so always want something under the Exped mattress even though it's pretty tough!
I expecting temperatures between 5 °C - 22 °C at night, though they can vary by location and season, with the lowest possible low of 0 °C to 3 °C in Poland (Morskie Oko Lake at ~ 1400 m altitude in mid / late May and the high low of 16 °C to 24 °C in French / Italian Rivieras (sea level) in late June / late July...
Yes, probably I'll overheat sometimes in Year 1 in my hammock, but this is easily managed by not using the Top Quilt fully. In Year 2, Year 3 and Year 4 the Top Quilt will be perfect... Taking an 167 g/m² one will be a bad idea because Climashield Apex quilts lose some loft and warmth over time, especially with compression, and one over 200 g/m² will be overkill... 200 g/m² seems like the sweet spot for me...
For the cowboy camping part I'm not exactly sure, but I'll pack a lot of wool... whatever will be, will be...
...
Hitchhiking / Hiking (yeah, backpacking), while sleeping for ~ 6 months in temperatures between 5 °C / 41 °F and 22 °C / 71.6 °F at night, though they can vary by location and season.
[OCF Pad](https://hennessyhammock.co.uk/products/4season-explorer-xl-zip) (~ 350 g / 12.34 Oz) + ['MT500](https://www.decathlon.co.uk/p/trekking-folding-foam-mattress-mt500-insulating-195-x-55-cm-1-person/306340/c101m8901525) (480 g / 16.93 oz) = R 3.2 - R 4.2 [for cowboy (stealth) camping]. Buying something like [THIS](https://www.walmart.com/ip/Ozark-Trail-Closed-Cell-Foam-Blue-Camp-Sleeping-Pad/634956813) one (252 g - 320 g / 8.89 oz - 11.29 oz) will save me a few g / oz but is not as durable as the 'MT500 one...
NO UNDERQUILT ( it's weighs more then the OCF Pad and I'm too broke to afford one anyway (not a wise choice to buy a cheap chinese one neighter), not a wise choice to change the OCF Pad with a shorter one neither).
NO UNDERQUILT PROTECTOR (this does not fix the fundamental issue of compression and lack of insulation).
Estimated Usage: Ground System (65% - 75%)... The hammock (25% - 35%) will be my insurance policy for my comfort and my mental health during the wettest, hottest, and most challenging parts of my journey. It is a worthwhile luxury.
Get the Decathlon R2.2 one. It's warmer than a lot of competitors and like 25€.
R value is a simple addition, so if you add it to your current pad you'll have a total R value of at least 4.2. Which is pretty good down to freezing and slightly below.
Put the foam on top of the airpad (prevents heat loss to the sides). Foam also feels warmer than air.
It's not really open cell. It's CCF but without the shiny plastic coating most of the accordeon styles have. That's why it's a bit lighter compared to competitors even corrected for the slightly shorter length.
Here's the [link.](https://www.decathlon.de/p/schaumstoff-isomatte-faltbar-1-person-trekking-mt500-180-55-cm/174619/c149c344m8492712) 370g for 180 x 55 cm. Specs are spot on. It's also somehow gotten cheaper with time, now only 20€ instead of 25€.
They also sell a coated [version](https://www.decathlon.de/p/schaumstoff-isomatte-faltbar-isolierend-trekking-mt500-195-55-cm-1-person/306340/c101m8901525) that feels more like a Z-Lite or any of the dozens of copies of that. At a 25% weight penalty, its 480g for 195 x 55cm or 2,5g/cm compared to 2g/cm. Its 5% warmer with a total of 2,2R though.
I have used the uncoated version extensively, half of it as a sleeping pad, the rest cut into various backpanels and sitpads, for multiple years in a variety of environments. It's great. Gets the same micro-tears on the surface you'd expect on a Thinlight.
I found the exact same items on amazon for cheaper so it seems they are safe to sleep on, but you can get 2 actual [sleeping pads](https://www.decathlon.ca/en/p/insulating-foldable-foam-mat-1-person-mt-500-195-x-55-cm/306340/c101m8901525) at that price, though it may not be as comfy on rocks it will be far more useful for future trips
Used my SL Rapide with a Decathlon Forclaz z fold mat in -3 c (26 f) and didn’t feel any cold. Used a Nemo Disco 15 bag though not a quilt. I find it a great pad but probably wouldn’t go too much colder. Lots of factors to other factors to consider…did you eat fatty food before bed (chocolate, cheese etc.), did you get warm through exercise before you got into bed, maybe Nalgene as a hot water bottle in a hiking sock, I use a Sea to Summit Reactor liner when cold and do think it adds some warmth, did you wear merino base layers/socks and wear down jacket (take off if too hot once in) etc etc.
Makes sense. I think the z fold I got makes a difference when it’s really cold. Only £20 from Decathlon and not too much of a pain..I strap it to the bottom of my pack.
Top Sleeping Pads on Reddit
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MegaMat Series
92% positive of 454 users
Car camping comfort champ, but some side sleepers find it thin.
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