The therm a rest women s neoair xlite mattress is a fantastic choice of 3 season lightweight sleeping mat that offers an unrivalled warmth to weight ratio thanks to the reflective thermacapture technology making it a great sleeping mat for backpacking this sleeping mat is slightly shorter in length as it has been designed for ladies and so by not having to the extra redundant length you will be saving on the weight and pack size it is also as packable as a water bottle to keep your pack size to