Designed and tested by a leading orthopedic specialist. Helps reduce back strain and fatigue. Unique, patented system of self-adjustable foam inserts provides "personalized" comfort and support for all types of seating. The only cushions on the market that allow the user to adjust their shape and their thickness. Velcro strips hold cushions in place on fabric covered seating. Adjustable strap provided for smooth surface seating. Ideal for use in the office, home or automobile. Made from flame retardant, washable fabric for easy care. Available in two coordinating colors to complement any seating decor!