The Todd 1792-18NI Large Deluxe Dry Storage Seat has a single-wall, non-insulated interior. Stylish and durable Todd Deluxe Swingback Seats feature stainless steel swing-arms, plush marine grade ribbed vinyl upholstery, a hinged lid with a recessed rubberized gasket that provides a tight seal (to keep contents cold for a long time), rounded interior corners to prevent bait from becoming trapped, a drain fitting, and polyethylene mounting plates.