All right then: I had a Fat Airic mat, from those brilliant people at Alpkit. Little used, but I'd been thinking for a while it was going down, so tried to find the hole. Failed, in spite of immersing it as much as I could in a bath and applying pressure, so suspected it was porosity in the fabric. emailed Alpkit, very helpful response saying send it to them etc. Net result, replacement imminent. And they were aware I had not bought it recently, too. This seems typical of these people, always top class customer service. Honestly, I cannot praise them highly enough, for this and other similar things. Isn't it nice to deal with such a company!
