Made from 6.25 oz synthetic polyester, this Trailerite boat cover is manufactured for a specific year, make, and model of boat, providing the best in fit and trailerability. These covers feature four-ply folded double stitched seams, 1" heavy-duty UV-resistant tie-down loops sewn into the hem, fold and back-stitched reinforced corners, and rot-resistant UV-stabilized thread. Sewn-in reinforcements help protect all potential wear points. Large diameter nylon draw rope in the hem. Patented rope lock lets you quickly tighten and loosen the draw rope. This acrylic-coated polyester fabric also provides excellent water repellency and a superior strength-to-weight ratio.