With its bullet proof design and heavy duty construction, these seats might even outlast your boat. Not just durable, but comfortable as well. Features: Double contoured seat pan that eliminates pressure pointsStainless steel hinge pins secure the fold down backIncluded 1/4″ x 20 t-nuts allow mounting to any standard marine swivel, slide, or seat spiderAll-weather seat shell will also accepts proprietary Quick Disconnect Mounting Kit for even more functionalityCustom fitted cushions with welded seams that inhibit water intrusion, marine grade UV stable vinyl, and high density foam inserts