In the blog below on the gear I used on the Cycle tour through France I comment on my Neoair. The mat started to delaminate during the trip, although it didn't lose any air so remained comfortable for the rest of the tour. Last Sunday I finally got round to emailing First Ascent (the importers of Thermarest products), explaining the problem.
After a couple of emails, confirming my suspicions of delamination I received a new Neoair X Lite on Thursday. Superb service, First Ascent should be commended on such prompt attention.