Manufactured with tough Endurance 200 marine-grade 100% polyester fabric. This lightweight but super tough fabric is designed for ease of use and storage. These Select Fit Covers provide good water repellency plus excellent breathability while moored at the dock or in storage. Double-stitched double-ply construction at all seams. Sewn-in elastic shock cord for a tight fit. Each cover includes a FREE oversized mesh storage bag. Not recommended for trailering. 4-year limited warranty.