Today's DUX bed is the result of over 90 years of research and development. From its unique interlocking spring system to the Pascal Personal Comfort Zone System and adjustable lumbar support, The DUX Bed's technology is one that works, and we have the history to prove it. For all bed models, DUX has developed a spring that is unparalleled in the luxury mattress market - unparalleled in support, flexibility and resilience. Only the dynamic nature of a spring system can actively contour to all your movements at night. The DUX Bed’s spring count is unmatched in the bedding industry. For all bed models, The DUX Bed uses only the highest grade materials, all chosen for their performance characteristics to make it the last luxury mattress you'll ever need to purchase.