Excellent Quality. 100% Solution-Dyed marine grade polyester. 7.6 oz., 600 x 600 Denier. Sun-DURA colors are part of the polyester fiber itself so the color goes completely through the fiber instead of being just on the surface. 100% Polyurethane finish coating. Excellent UV and mildew resistance. Excellent resistance to fading and rot. Excellent sun blockage. Extremely water repellent. Excellent against cold-cracking. Breathable to help allow interior moisture to escape. Cover Specifications Cover Material: Sun-DURA (100% Solution-Dyed Marine-Grade Polyester) Fit: Up to 14’6″ Color: Grey Properties: UV, Mildew, and Water Resistant Origin: Made in the USA Warranty: 7 years Features: Double Stitching, Anti-Wick Threads, No Raw Edges, Breathable, Drawstring, Tie Down Loops Sewn In (No Tie Downs included) WARNINGThis product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm.For more information go towww.p65warnings.ca.gov.