From Sea to Summit. Looks thing looks dreamy. 4" pad with a 3.8 R value for only 15oz in the standard size! What catches my eye though is the Regular length/Wide option at only 19 oz. This may replace my Xtherm for all but the later seasons.
https://seatosummitusa.com/collecti...insulated-sleeping-mat?variant=19512263278695
https://seatosummitusa.com/collecti...insulated-sleeping-mat?variant=19512263278695