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As title looking at one of these, looks ok for packed size, any others to look at ?
Good bit lighter and cheaper is
http://www.sportsdirect.com/karrimor-xlite-self-inflating-full-mat-782018?colcode=78201808
No experience myself but reviewed at
http://maceachain.blogspot.co.uk/2010/12/karrimor-x-lite-self-inflate-sleeping.html
I have one, great for the price, packs up nice and small. Have used mine cycle touring and bike packing with no complaints.
I have an Alpkit 'self-inflating' mat and a Numo - much prefer the Numo, it's really light and comfy. I guess the self-inflating one might be warmer in spring/autumn/winter.