All our spa covers are manufactured using only top quality materials, providing you a durable and lasting spa cover. All spa covers come with a 5 year manufacture's warranty against water absorption. Spa Soft Cover has a 1 year warranty. Our covers are manufactured using marine grade vinyl and energy efficient polystyrene inserts. Inserts are heat sealed with a poly vapor moisture barrier to protect against water absorption. UV inhibitors in both the vinyl and thread prevent premature aging of your spa cover, which all had up to a superior product. FREE FREIGHT!