The Aeros Deluxe Pillow is a result of the Sea to Summit Design Team taking the adage of ?bigger is better? to heart. The result of our super-sizing project is a full sized pillow that is still light and compact enough to accompany you into the backcountry. The pillow case construction uses a super soft 50D quilted polyester for consumer comfort, while still being supported by a high strength TPU bladder.