Engineered by a team of leading spinal surgeons and ergonomists, the Tempress ProBax Orthopedic Boat Seat is the only seat clinically proven to optimize long-term back and upper-body support. Patented base and exclusive dual-core foam support system promote better posture and cushion against water chop, reducing the fatigue of long days on the water. Marine-grade construction boasts water-resistant 30-oz. marine-grade vinyl with UV- and abrasion-resistant polyester thread. Universal seat bolt pattern is molded into the frame to accept any 5.25 mounting system or pedestal. Includes stainless steel mounting hardware and Loctite patch. Made in USA. 24H x 19.5W x 19.5D. Colors: Red/Gray, Blue/Gray, Charcoal/Gray, Black/Gray, White/Gray, White/Blue, Charcoal/Green, Charcoal/Orange, Charcoal/Blue, Charcoal/Red. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Boat Seats.