Offering all-day comfort, these quality Centric Hi-Back Seats are reminiscent of the seating in an expensive sports-car. Ergonomically contoured and designed to eliminate pressure points, these Hi-Back Seats are built with support bolsters to keep you in the seat while the S-curved backrest relaxes the spine. Perfect fit in confined location, the seat rotates on a 23'' diameter and is equipped with Centric's patented pinch-proof hinge and lock-down detent to secure the seat in a down position. Centric’s heavy-duty blow-molded construction meets and exceeds ABYC H31 impact standards while the rugged marine grade vinyl upholstery sports attractive patterns. Easy to install, each seat includes corrosion-resistant T-nuts for attachment to seat pedestals. Measures 19'' W x 21'' D x 24'' H. Features: Molded contoured surfacesRugged molded constructionMolded support bolstersPatented integrated hingeRaised seat pan backRecessed underbodyLock-down detentCompact turning radius