In reply to jockbmx666:
Yeah it's grand. Like I say if you use it upside down (straps facing up to keep a dry back) it seems to compress a lot faster so I assume there's only stiff foam on one side. Obviously I'd advise against doing that...
I've used it in Font, Peak and mostly north Wales. All sorts of terrain, esp. the bogs of North Wales and it's holding up great. I usually carry two pads (ocun wrapped over the psychi) and stitching is holding up perfectly.