Amazingly comfortable pressure relief therapeutic support 2 inches thick Great for travel Very popular among professional truck drivers Includes deluxe cover WonderGel Extreme seat cushion offers therapeutic support and amazingly comfortable pressure relief by implementing our exclusive column-buckling gel technology. Very popular among professional truck drivers, its deep 2" of gel are great for aircraft cars and trucks that allow more head room. The Extreme seat cushion also comes with our deluxe, black, washable, zippered cover with a non-skid base and carrying handle. This carrying handle makes it very easy to take the Extreme seat cushion anywhere you go and have comfort everywhere you sit. The dimensions of the cushion are approximately 15.25x17.25" to fit in any seat. Get your WonderGel Extreme seat cushion today and have comfort wherever you are!