self inflating camping mattress (NW2)

kathmandu self inflating mattress. I bought it for camping at festivals 10 years ago. At the time it was the luxury model, so it’s quite bulky. About 62cm width, and 5cm thickness (I think). I’m reluctant to get it out because I don’t want to put away again, but last time I got it out it was without punctures, though does not self inflate as much as it used to.

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