RightTemp Wave Foam and Micro Diamond Memory Foam provide outstanding pressure relief to help reduce tossing and turning while actively working to provide a cooler night's sleep. RightTemp Wave Foam uses carbon fiber to pull heat away from the surface, and Micro Diamond Memory Foam features diamond particles that act as a heat sink to continue to dissipate excess heat, so you sleep cool and comfortable.

The T2 Pocketed Coil Technology system uses hundreds of individually pocketed coils that conform to the unique shape of your body, resulting in gentle, yet solid support. This system features a T2 coil in the center 3rd. Made from two coils woven together, it provides extra support and durability to the lower back where you need it most. It's solid, durable, and adjustable base friendly.

The premium InfiniCool Lux quilt looks fantastic, and has a soft to the touch feel. More importantly, it's made in partnership with Seaqual, a company that reclaims ocean plastics and transforms them into soft and comfortable quilts. Every queen size Harmony Lux mattress has the equivalent of 50 plastic bottles, which helps contribute to a cleaner tomorrow.

Feel free to sleep anywhere on the mattress, without experiencing a big difference in comfort or support, thanks to the Beautyedge Foam Encasement. This feature is especially nice when you share a queen size mattress because you won't feel like you're battling your partner for the middle, where comfort is consistent.

With a 10 year non-prorated warranty, this mattress is made to provide comfort and support well into the next decade.

The Diamond Medium is a fantastic choice if you're looking for one of the best mattresses in the higher end tier being made today. From the quilt to the coil system, this mattress is made using some of the best materials Beautyrest has available. If you like a firmer feel, go for it, this mattress won't disappoint.