attwood Aergo Fully Upholstered Seat (Gray/Gray) The Aergo seats features show that it was definitely designed with comfort in mind. Angled back and cut out allow the user to get a comfortable back angle in any seating position. Recessed arm area allows user to swing their leg over the side of the seat when turning to look behind the boat and the flip up bolster allows additional height when trying to get the boat on plane. All upholstery is marine grad vinyl. Available in a variety of colors.