Unique innerspring construction made with coild of 13.5 Gauge tempered steel for superior strength, long life, and comfort. Cushion deep-down support, fibre insulating pad. Durable cover and binding, protected with hypo-allergenic 100% vinyl cover that helps resist tears and stains. Bound with a durable sewn border tape for a firm closing. Proudly made in the USA. Meets or exceeds all flammability, lead, phthalate and CPSIA testing. Product width 27.5 Product length 52.