600D marine grade fabric Robust and durable 600D Oxford fabric with a double waterproof PU coating and UV resistant composite material. Designed for high temperature resistance, enhanced tear resistance, and flexible durability. Protects your boat from harsh environments including rain, snow, ice, wind, dust and sun. Comprehensive protection Adjustable shoulder straps and a high strength windproof quick release buckle make it easy to secure the cover to the boat and prevent it from blowing away. An elastic cord at the hem provides a snug, 360 degree fit for trailer storage and outdoor use. Durable construction All seams are double stitched for lasting strength. The belt seams are covered with waterproof strips to prevent rain from entering from above, delivering reliable protection and long service life. Universal compatibility Fits V-hulls, fishing speedboats, trimaran speedboats, fishing and ski boats, and professional bass boats. Please refer to the size measurement method in the pictures and check your boat size before purchasing. Use scenarios - Outdoor trailer storage during travel or camping trips: keep the boat protected from weather and debris. - Marina or boatyard protection: shield against sun, rain, wind and dust when not in use. - Seasonal or off-season storage: secure and protect the boat during long-term storage with the adjustable straps and elastic hem.