The Harken 420 Travel/Mooring Cover, Part No. 8041, is made from durable Top Gun canvas fabric and designed to provide protection for your boat while the rig is up or down. It features a wraparound mast collar and heavy-duty zippers that zip around the mast and stay wires. The cover's heavy-duty shock cord and four (4) straps with quick-release buckles ensure a tight fit over the cockpit, minimizing windage.