Stearns & Foster® Silver Dream Collection offers ultimate comfort and luxury. It features Intellicoil iD™ support - double tempered, individually wrapped titanium coil-in-coil design innerspring for more durable and less disturbing sleeping. S&F® markets these springs as made from Titanium Alloy, but they are actually steel spring with a miniscule amount of titanium. Silver Dream Collection offers the highest quality premium comfort materials like New Zealand wool, 100% natural latex , Eco-cotton and wool. All models have foam encasement all around the mattress for sturdy edge support. There are handles on both sides of the mattress for easier manipulation. 25 year limited warranty.