Designed for open or closed bow boats with up to a 20" windshield. Accommodates bow rails up to 6" high. Super strong and easy to handle, Covermate Imperial Pro Boat Covers are made of 100% polyester 450-denier fabric that's breathable, water-repellent, and UV-resistant. Imperial Pro Covers have an exclusive venting system that offers extra protection against mildew. Tough enough for trailering, all Covermate Semi-Custom Boat Covers are tight fitting with a unique over/under tie-down system that delivers "no flap". This cover has never been unfolded. I bought it and then got rid of my boat. Overton’s sell this cover for $248.