The therm a rest neoair xlite air mattress is an incredibly high performance compact and ultralight mattress that offers exceptional warmth to weight ratio making it ideal for hikers climbers and explorers this small version of the incredibly popular neoair xlite offers you even more weight saving as it only weighs in at 230g and with a pack size that is comparable to a one litre water bottle the neoair xlite offers astounding warmth to weight ratio thanks to its thermacapture reflective layers