530*818cm Heavy Duty Waterproof Portable Boat Cover, Durable Gray Oxford Fabric Waterproof, for Yacht, Fishing Boat, Tri-Hull ((19-21FT-V)Durable material and dimensions: made of weather-resistant, dust-resistant Oxford fabric, this boat cover can protect your boat from harsh elements, such as wind, sandstorms, sun, rain, etc. Strong : It was equipped with strong nylon drawstrings that allow you to comfortably tie it to your boat and prevent it from being blown away by the wind. An elastic cord around the bottom hem ensures a snug fit to provide your boat with 360-degree total protection, perfect for towing and outdoor storage. Note: Data are all measurements Manual, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received.