Carver Flex-Fit™ PRO Boat Cover, 17'-19' For Tri-Hull and V-Hull Boats. For tri-hull boats I/O or O/B and V-hull boats I/O or O/B. Slate gray color. Weather-resistant with anti-wick thread construction. Join seams are folded four-ply leaving no raw edges. Tie-down loops are sewn into the hem for double reinforcements. 17'-19' centerline length. 96" maximum beam width. Tie-down kit and mesh storage bag included.