Hunting at the zoo again mate?
Interesting point though, thinking of upgrading from my venerable Thermarest (not a flash one, from the 90s I reckon) and looking into the various mats .. different denier between a lot of brands but I suspect what will puncture one will puncture all. Abrasion may be a different story.
The Rab Ionosphere seem pretty sharp on price for the R-val right now
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