Therm-a-Rest Large Air Head Pillow - Regular combines high-quality materials and construction for the ultimate in comfort. Made with a four-inch-thick baffled inflatable core, the Air Head Pillow contains synthetic insulation to offer a balance of softness and support. Its partially-recycled brushed polyester cover is opulently soft to the touch. With its expertly-designed shape, the Air Head Pillow supports your head and fits easily in your sleeping bag's hood. When you're done using your pillow, simply remove the cover and machine wash to keep it looking and feeling great.