The 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 won't be sliding off of your mat: the Pillow Lock system keeps your pillow right where it belongs. Premium down cushion-top for comfort and warmth Soft, silent TPU air bladder provides excellent support Technical fabrics from our Spark/Flame sleeping bags for incredible lightweight Patent-pending multi-function mini-valve for easy inflation, adjustment, and deflation Pillow Lock compatible