I've had one of these for years. Slept on all sorts of ground and used it as a range mat for HFT. ALWAYS kept in the van in case of late night breakdown. Not especially wide. The lad once forgot his kipmat, and we had to share this one. It was a bit cosy tbh.
I've had plenty of nights on a half inch inflating mat too, can't remember the brand, but it was bought for daughter's D of E many moons ago. About £15 on Evil Bay. Gave up on roll mats a long time ago, too bulky and they get in one's way.