The Manhattan mattress is an exceptional yet inexpensive mattress set. It has a very durable Bonnel inner spring system, with 216 springs in twin, 312 in full, 390 in queen and 468 in king which provides a firm yet comfortable feel. This matress has a neatly upholstered pillow top and the resulting extra "cush" will please those needing a plusher, more premium feel. This is one of our best selling low cost sets. The Manhattan is an excellent mattress; great for kids, cottages, guest rooms or everyday use. It comes with a 5 year pro-rated warranty.