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In reply to Post #37
As Post#17 I keep mine with a semi lob on 
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In reply to Post #36
You are correct, storing them rolled up, will shorten the life of the mat.
Although i guess as its a gradual decline I haven't noticed.
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I was reading an article on self inflatable mats the other day and it said they should never be left rolled up and they should be kept inflated when not in use or it will damaged the foam cells and they wont self inflate properly if you keep them rolled up. It also said not to blow air into them as it causes bacteria to breed and also damage the foam cells. They suggested leaving them inflated under a bed or behind a wardrobe. Defeats the object of the self inflating aqua mat i just bought mind as i bought it as it was so compact. They never mention having to keep it inflated in the description so thats a bit of a con.
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In reply to Post #1
The one you want is the Mountain Equipment Helium 3.8
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In reply to Post #32
My Nash Indulgence doesn’t have a zipped on bottom layer to lay on - just the mattress. They have a zip on top layer to lie under.
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I have both the Helium 3.8 and Thermarest Trail Pro SIMS ... The thermarest is the better quality SIM with better specification but is more money
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In reply to Post #31
No. I put my Thermarest between my Duralite and zipped on bag layer. Works perfectly.
I think that's what you're on about?
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In reply to Post #2
Is a SIM only suitable for a Sleeping Bag on top?
Any thoughts on using one with a Bedchair Sleep System not having a Sleeping Bag but Duvet layers where you lay directly on top of the SIM?
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I have an Avid Benchmark X. In the interest of reducing weight and bulk, I’m considering removing the memory foam mattress and replacing with a SIM.
Sensible, effective?
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I have a thermarest 3/4 length and it's ideal.
Id say the 3/4 length is a better option as with a full length the areas of greater body mass will push the air down to the foot end and the air padding wont be as efficient.
The 3/4 sim cushions the shoulder and hip areas better, essential for side sleepers, and will also ensure the main body areas are better supported.
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In reply to Post #26
I use it all year initially I bought it for warmth on my back
and was worried in the summer it would be sweaty and wet like the cheap ones but its brilliant and can be used all year
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In reply to Post #25
Thank mate it just turned up and I can tell it's much better quality than my old one.
Thanks for the recommendation,👍👍
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In reply to Post #24
it does underneath my sleeping bag just keep off it for 40 mins or so
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In reply to Post #14
Will it still self inflate enough under the 2 sleeping bag layers on my sleep system mate
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| | | Belch | | Posts: 4129 |  | | MODERATOR | |
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In reply to Post #1
. ..I've got a a cheapy Adrek XL (3cms) and its currently lasted a 48hr sesh every week for the last 6months . . .has stayed on the bedchair folded with sleeping bag in between sessions and has never needed additional manual inflation . . .
https://www.amazon.co.uk/Adtrek-Inflating-Camping-Mattress-Included/dp/B01F8QGODW
At 61cms fits a 'Standard' bedchair perfectly (between the perimeter padding) and doesnt move / shift about when in use . . .I sleep on both my back and side.
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In reply to Post #4
Snugpak have a half price sale on these sort of mountaineering/camping self inflateable air matteress's, I dont know about sizes or quality though.
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I have one from Decathlon £ 17.99: Quechua Forclaz 400 x
Can't say anything wrong about it and use it with a fitted sheet over it
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In reply to Post #19
I use the Vango Comfort Grande, it’s 7.5cm thick and very very comfortable, well worth a look at, it’s around £50.
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In reply to Post #18
Wychwood Tactical X compact and sim is an excellent choice.
I am 6 foot tall and almost the same wide, weighing 15 stone.
As said before, a helium 3.8 mat on this bed is comfortable and still light
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In reply to Post #17
I use a thermorest verture , I have to inflate it myself but I prefer it
as it deflates very easily
Little bit expensive though, but worth it 👍🏻
Would it still qualify as a Self-Inflate-Mat ?
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In reply to Post #16
Yes but when I store it at home I keep I don't squeeze all the air out of it, I'm not sure if that's essential but it's what I do, I don't like the idea of it being squeezed tight for most of the time.
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In reply to Post #15
did your mattress sort itself out in the end?
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More info on inflating
HERE
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In reply to Post #12
my biggest tip as been said dont over inflate it some people JUST dont get it ? follow the instructions
open the bed out open the valve IT WILL SELF INFLATE enough within 45 mins if you dont put anything on the bed
I would suggest you experiment indoors when you first get it
lay it on your bed with valve open for 45mins do valve up
THEN try and roll it up you will then realise just how much air has gone in it chuck it on a hard floor then lay down on it you will then see what a huge difference it can make
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In reply to Post #12
Thats exactly what I do and its been absolutely fine 
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In reply to Post #2
Just bought the helium old geezer on your recommendation I've already been stung with a cheap version and all it did was keep getting pin ***** holes for some reason.
I take it I can leave the helium inside my sleep system and just deflate when packing away?
I definitely don't want to ruin another one
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In reply to Post #10
You won't be disappointed,just don't over inflate it as it can make it uncomfortable.
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Thanks for the replys ,ive opted for the helium one from cotswalds seems a good price and a decent discount .
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In reply to Post #1
Sorry. Had to edit this as the info I gave was wrong. 
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In reply to Post #1
I've got an Exped Megamat 10 LXW, 77cm wide, not cheap but I sleep like a baby on it.
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Another SIM that got mentioned on here was one made by Andes.
If anyone is interested it should come up if you do a search on here for Andes.
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In reply to Post #1
You don’t see many that width mate. Most advertised as large are about 600mm wide. I have the Helium and the Vango trek 5. Which is listed on Cotswolds site. It’s cheaper and slightly thicker and has a click on off valve. Which I prefer out of the two. And it’s been good for a couple of years use.
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In reply to Post #4
For £40 you got an absolute bargain.. Best SIM I have used by a mile.
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In reply to Post #3
Cotswold often have sales but rarely include the Helium. On Black Friday 2019 I managed to get 20% off bringing it down to £40 inc P&P. That was a rare event though it could be ages before they do that again.
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As already mentioned above the Mountain Equipment Helium 3.8 is the one you want. At that price it’s a steal.
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In reply to Post #1
I use one thats 183 x 51 x 3.8cm and the really great thing about it is it fits inside the raised edge and so cant move around and when you Pack up you dont even know its on there
AND you have perfect support only where you need it its designed for back packers that just lay it straight on the ground so you can imagine when it goes on top of a bed chair its perfect
I found you really DO get what you pay for when buying a sim as a lot of people have found out buying cheap ones
this comes with a 3 year warrantee LINKY POO  
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Has anyone used a sim thats around 90 cm- to 100cm wide and recommend one ? cheers
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