Stearns & Foster® Golden Elegance Collection offers the ultimate in luxury and features all the best materials nowadays available in bedding industry like cashmere, New Zealand wool, Mongolian Horsehair. It features Intellicoil iD™ support - double tempered, individually wrapped titanium coil-in-coil design innerspring for more durable and less disturbing sleeping. Tricky part is figuring out the coil count for this type of innerspring, you would need to multiply each coil by 2, where smaller coils is inside of the bigger coil, but we think both coils should account for one. S&F markets these springs as made out of Titanium or Titanium Alloy, but they are actually standard steel spring with a miniscule amount of titanium. 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. 10 year limited warranty.