The Butt Buddy is a seat cushion with a built in captain's bag that straps onto your 2"x8" wooden frame. The Drybox Butt Buddy is made to fit YOUR drybox. Please call us if your length exceeds 42". We make these to the measurements you give us and can customize the strapping and captains bag to meet your needs. Check out the Cooler Covers for another option for seat padding.