Warranty: 10 YearPoolTux Royal solid winter cover for 16′ x 25′ oval above ground pool with 4ft overlap. 5 mil thickness; blue/black triple laminated polyethylene with heat sealed seams for added strength. Edges incorporate a sewn-in polypropylene cord for reinforcement. Aluminum grommets spaced every three feet. Deluxe aluminum cable winch and vinyl coated steel lock-down cable included.