Therm-a-Rest Airhead Pillow Yellow Mountains Regular. Unlike traditional Camping Gear Accessories with cotton or down filling the Thermarest Air Head has a baffled air chamber that allows you to deflate it when you're not using it to reduce how much space it takes up in your pack. Then when you want to stop and rest for the night you can easily re-inflate it to get a comfortable headrest even when you're roughing it out in nature. Specifications for Therm-a-Rest Airhead Pillow: Manufacturer: Therm-a-Rest Application: Camping Depth/Thickness: 4 in Age Group: Adults Fabric/Material: Polyester Cover/Urethane Insert/Eraloft Synthetic Insulation Features of Therm-a-Rest Airhead Pillow Light and Compact: Packs exceptionally small for easy travel. Thick and Stable: Four-inch (10 cm) thick baffled air chamber for stability loft and custom support. Soft: Synthetic-fill top and a brushed exterior provide next-to-skin comfort. Removable cover is machine washable nonslip fabric keeps pillow in place. Thoughtful Shape: Precise shape nestles into the hood of your sleeping bag and is available in two sizes. Sustainable: Made of partially recycled fabric so it supports your head and mother nature. Package Contents: Therm-a-Rest Airhead Pillow Therm-a-Rest 14234: Airhead Pillow Yellow Mountains Regular