Exped synmat 7 pump camping mat this airmat filled with synthetic fiber is super comfortable warmer and lighter than regular sleeping mats the synmat packs down small thanks to the microfiber filling that compresses extremely well quick inflation with the ingenious integrated pump the synmats do not reach the insulating properties of our downmats but offer the same comfort low weight and compact packed size they come at a lower price point as synthetic fiber is less expensive than the go