This bullet-proof replacement seat has been a fishermans best friend for over 20 years.This seat shell is made with corrosion-proof polypropylene and heavy-duty stainless steel rivets. It features a double contoured seat pan to eliminate pressure points and comes with easy to store snap-on cushions.Each cushion is made for all-day comfort with UV and abrasion-resistant polyester thread, 30-oz marine-grade UV stable vinyl, and high-density 1.8 lbs foam. A universal seat bolt pattern is molded into the frame to accept any 5 mounting system or pedestal.18 1/2″H x 18 1/4″W x 17″D.Made in USA.