Perfectly suited for travel, this gel pad folds down into a lunch box-sized carrying bag for convenient portability. Available only from Hammacher Schlemmer, the 1"-thick cushion is filled with a soft visco-elastic gel with acupressure nodes that disperse your weight to help reduce lower back pain and enhance comfort while sitting in a car, airplane seat, or stadium seat. The top of the cushion is covered in a breathable polyester that prevents heat build-up, while the bottom has a stippled, textured material that prevents slipping. It folds in half, and in half again, to fit compactly into its integrated zippered bag. Spot clean. Black. Folded: 8 1/2" H x 9" W x 4" D. Open: 1" H x 18" W x 17 1/4" D. (3 1/2 lbs.)