The Talon Series Open Back Bucket Seat with flip bolster comes with a heavy duty rotational molded plastic bucket frame and a universal mounting plate for added strength. 28oz. Marine grade UV and mildew treated vinyl is soft and supple. Virgin high density foam padding. Flip up bolster to lean against or sit up higher during docking, adds to your safety. Mounts on any standard 5 1/4" pedestal or slide system.