Exped Synmat hl mw

Discussion in 'Sleep Mats' started by Cranston, Dec 28, 2019.

  1. Cranston

    Cranston Thru Hiker

    Just wondering as a few have the HL mat with the R 3.3 value, what is the lowest temp you feel comfortable using this mat?
    Might you give me a general idea of the coldest conditions you have used it please - assuming you had the usual other adequate conditions in place correct bag/quilt, eaten well etc.
    Plus are there methods you've found worked to boost it for about the 100gms rather than something bulky like a 10mm CCF to boost it? The radiator reflector/picnic mat type stuff?
    Thanks kindly.
    Last edited: Dec 28, 2019
  2. Chiseller

    Chiseller Thru Hiker

    I've used mine to just below zero with a foil sheet below and another couple of times with a 3mm ish mat beneath.
    Used with a 3 season quilt in wet cold and a MLD superlight bivi (inside of tarp frozen) and was comfortable but wouldn't have wanted to test it to less than - 2/3 .

    On my last outing, it was around - 4/5 I used the wife's synmat UL Lite M 380g with a small section of thin mat below.
    I slept with the bivi above the mat ( I usually sleep with a mat in the bivi) thin trousers, down sweater, hat & gloves and was very comfortable.
    For the weight, I wish I'd bought the same model as it was defiantly warmer and the rectangle worked better than my tapered HL M (I lost my HL MW)
    I reckon I'd be happy at - 8/10 with hers and a winter quilt or with my 3 season and a thin full length picnic / radiator mat.
    IMG_20191201_013445.jpg
  3. Chiseller

    Chiseller Thru Hiker

    Ps.
    My hl was rated at 1.9r & The synmat 2.5r
  4. Arne L.

    Arne L. Section Hiker

    I’ve used the Synmat HL for a while now.

    The lowest temperatures I had it in was -7 and I felt the cold coming trough the pad around my hips.

    Generally I felt a bit chilly those nights. I slept under a Apex 200 quilt & wore every layer I had (Patagonia Thermal / 100 weight fleece / Apex 100 jacket).

    Slightly below freezing seems to be the lower limit for me. I’m a cold sleeper... I think.
  5. craige

    craige Thru Hiker

    I've had mine a little below freezing and never noticed any different (I've not felt it warm or cold). I guess I can take mine lower than Arne though, as he definitely sleeps colder than I do.
  6. Cranston

    Cranston Thru Hiker

    Thanks Chis. Much appreciated.
  7. Cranston

    Cranston Thru Hiker

    Thanks Arne. Good to know. You didn't think to put something under the mat? Or got caught out by the cold?
    Last edited: Dec 28, 2019
  8. Cranston

    Cranston Thru Hiker

    Thanks Craig. I am hoping around the sub zero a bit. Have you tried something under?
    Last edited: Dec 28, 2019
  9. Cranston

    Cranston Thru Hiker

    Last edited: Dec 28, 2019
  10. Chiseller

    Chiseller Thru Hiker

  11. Cranston

    Cranston Thru Hiker

    Thanks:thumbsup:
    Chiseller likes this.
  12. Cranston

    Cranston Thru Hiker

    Solved. Going to keep using my Xlite L for the bulk of the year. So comfy -might cut off 30 cms.
    Bought an XTherm R size in your 'run out -here comes the new valve' sales. 430 gms, R 5.7, 70 D bottom and 30 top. You beauty.
    Last edited: Jan 4, 2020
    Chiseller and Michael_x like this.

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