Affordable, Essential Luxury Mattress: The LuxiOne Essential Memory Foam Mattress is our most affordable luxury foam mattress. It’s a little thinner and doesn’t have the adjustability options of the LUXI 3-in-1, but it provides a popular Medium/Soft feel and delivers the same essential shape matching technology (SMT) for optimal levels of support, cooling, breathability, and comfort and because of SMT it is an excellent choice for use with an adjustable base.