For Winter Pool Cover + Pool Cover Water Tube Bundles CLICK HERE: Click to BUNDLE & SAVE! Economy inground pool winter covers feature a durable polyethylene construction complete with an 8x6 filament scrim and triple-laminate coating Water bag loops and double-stitched borders resist the harshest windiest winter weather Economy inground winter pool covers resist tearing with stamped aluminum grommets on all corners UV inhibitors protect all of our inground winter pool covers from sunlight degradation Navy blue color with a black underside resists algae growth and blocks sunlight Affordably priced for budget-friendly inground swimming pool winterization