Thermarest neck pillow description updated for 2014 the venerable neck pillow is a friend of many weary travelers weve built ours with a conforming isotonic memory foam interior and soft machine washable polyester cover a new shape reduces volume in the back and adds some volume to the front lobes allowing for a more natural and comfortable head position the whole pillow compresses small with an integrated hook and loop compression strap for easy storing in your carry on bags