Aeros Down PillowThe Aeros Down Pillow combines the softness and supportiveness of the Aeros pillow series with a luxurious down pillow top. Technical fabrics from the Spark Flame sleeping bags keep the weight down and the packed size almost impossibly small. And, as you drift off to sleep, your pillow wont be sliding off your mat, thanks to the Pillow Lock system which keeps your pillow right where it belongs. Features Premium down cushion top for comfort and warmth.