Under Mattress Support - Fix Your Sagging Mattress With Mattress Helper No Sag Firmer Solution for Mattresses - Full Coverage 2 Pack (Queen) Designed to lift your mattress towards its original shape --- U.S. Patents Granted - Additional Patents Pending - Patented SPACING which prevents pressure point pain of other SOLID products Durable high density foam UNDER Mattress Support System constructed to fix your sagging or too soft mattress - a SOLID functional foundation is needed -1 Mattress Helper per Sleeper for a LEVEL bed surface National & International Brand selling thousands to Hotel chains, College dorms, Hospitals and Much, Much, More!!! A portion of our sales proceeds are donated to Charity! Inexpensive alternative to buying a new mattress --- Proudly made in the USA Medical Doctor Reviews --- Mattress Helper Mini for Add'l length --- Requires flexible FLAT surface or box spring---ONE per Sleeper for a LEVEL BED SURFACE