If you are on the lookout for an ultra-firm mattress, look no further than the Giselle Bedding Rumba Series Tight Top Mattress. Our Tight Top mattress features a comfort layer with high-density foam and an innovative pocket spring system for maximum support. Inside, extra thick coils provide firm tensile strength for a natural body alignment that will especially benefit a back-sleeper. Covered in a plush Belgium knitted fabric that is soft on the skin and highly effective in absorbing and dissipating body moisture, our tight top mattress guarantees ultra-firm better sleep all the time. Mattress available in all sizes.