Reading of incidents like this, I sometimes wonder if Exped have a problem with the adhesives they use in the manufacture of their kit.. The summer before last I was camping in Norfolk and returned to my tent one day to find that it had been invaded by a grey, Hump Back Whale.
Hello! I thought, how did you get in here? Then I realised it was the Exped mat that had suffered a transformation. The middle two tubes had become one and now lay bloated and about 6 inches higher in the middle than at the sides. Obviously whatever kept the tubes together had failed.
I can't remember the model number, it had a built in 'pump' area that had to be depressed to inflate the mat. Not 2 years old, somewhere around £100 I think I paid for it. I had used it throughout the previous Winter quite frequently and always kept it deflated and stowed flat when not in use.
I never did enquire with Exped about replacement, although I did consider painting a couple of eyes on it and chucking in the pond to frighten the locals.
Back to a spongy (Dutch) kip mat now. zzzzzzz