The Ultima has been a favorite of Best Mattress customers for over 50 years. It is our most affordable two-sided innerspring mattress. The Ultima offers deep firm support with a cotton damask quilted top surface layer. Crafted at our West Columbia factory with locally sourced components. 416 coils (in Queen size) which are made with reclaimed steel to be more environmentally-friendly and are manufactured here in the Carolinas. Mattress is 10″ in depth.