• Am side sleeper, have Alpkit Numo. It's alright and I've happily bivvied on it down to -5° or so (at a guess). However, I have had three leaky valves. 2 sent back immediately, the third one didn't leak at first but started to not long after. Sealed it up with superglue though.

    Probably wouldn't recommend the Numo but Alpkit do have other mats that are fairly cheap and probably decent

  • I have a numo too (I've posted about it somewhere before), I like it but it deflates slowly through the night. I'm guessing it has a leaky valve too. Where have you spread the glue?

  • On all 3 that I had it was the pointy end of the plastic piece surrounding the valve. You could try blowing it up and jamming it in the sink and see if there's any bubbles, should be fairly obvious. I used some sort of rubberised super glue to fix it.

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