Attwood Deluxe Boat Cover Support System prevents water from pooling on your cover. Reduces mold and mildew to extend the life of your cover. Smart design uses a telescoping center pole and polyweb straps to form a double ridge line under the cover. Details: Pole adjusts from 28"-48" and includes rubber foot; Web straps attach to stern with non-marring hooks; Instructions included. State Size. Small investment that will help your cover last longer! Order Today! Attwood Deluxe Boat Cover Support System