The Carbon Medium Pillow Top has multiple layers of high-quality materials that provide a comfortably firm feel, but the newly developed RightTemp Wave Foam is a shining point for this mattress. RightTemp Wave Foam is made of carbon fiber, which pulls heat away from your body, and the unique channel design allows air to flow through much better, providing cooler, more comfortable sleep.

As one of the best comfort materials available, Dynamic Response Memory Foam reduces the pressure points that would cause you to toss and turn. It contours to your body shape, promoting good blood circulation for a quality night of sleep.

Beautyrest's new T2 coil system uses additional rows of coils that are like two coils twisted together. This uniquely designed coil technology provides better support where you need it most, under the lower back. Made with high carbon steel, it's engineered to provide a conforming yet supportive feel. The coils are individually wrapped, so this mattress is adjustable base friendly.

Beautyrest has a partnership with Seaqual, a leader in ocean cleanup efforts, and used their fabric to create a cooling quilt featured on every Harmony Lux mattress. Seaqual recovers plastic from the world's oceans and transforms it into high-quality fabrics that help us move towards a cleaner planet.

With a non-prorated warranty that lasts 10 years, you know the mattress will be comfortable and supportive for just as long.

If you like a medium-firm comfort level, the Carbon Medium Pillow Top is one of the best mattresses on the market. Beautyrest's release of the Harmony Lux collection has shown a return to innovation in a way that's really improved their products, making this one of the best new releases lately.