At home, work or on the road, you'll always have the most comfortable seat around! Taking a long road trip? Watching TV? Working on the computer? You'll be in complete comfort with this cushion. The secret is a special gel insert and interior cushioned chambers that provide superior support and comfort unlike ordinary cushions, it helps relieve lower back pressure and fatigue plus reduces numbness and tingling associated with extended periods of sitting too. Removable 100% polyester fleece-like cover is washable. 18" x 14.1" x 3.6". 300-lbs. weight limit. 1-year limited warranty.