Supportive and ultralight, durable and incredibly comfortable, the Pillow X has an advanced, self-centering X design position that cradles your head for supportive, stable comfort. Simply add or release air to raise or lower pillow height and adjust firmness for customized comfort. Weighing a scant two ounces and packing down to the size of a lighter, this is a luxurious necessity that always fits in your pack. The Pillow X is a backcountry sleep necessity and may be the most technically advanced pillow ever developed.