The Queen-Sized Serta iComfort CF4000 Firm Mattress boasts a number of impressive features, including a comfort rating of five. This makes the mattress a perfect solution for back and side sleepers alike. However, I wouldn't recommend it for stomach sleepers, who typically require a softer sleeping experience.

The Queen-Sized Serta iComfort CF4000 Firm Mattress is well worth the asking price, with Carbon Fiber Memory Foam, Ultra Cool PCM, and Air Support Foam. Carbon Fiber Memory Foam channels heat away from your body while you sleep, in addition to providing much-needed back and neck support. Ultra Cool PCM furthers this goal by creating a layer of extra-cool support that aids you in falling asleep faster, while Air Support Foam uses exclusive air-cushion technology to contour around the curves of your body. Together, these foams make for a long-lasting and versatile sleeping experience.

In addition to its many benefits, the Queen-Sized Serta iComfort CF4000 Firm Mattress includes a StabL Base Foundation. This optional foundation uses a V-shaped construction to isolate the impact of movement. This is particularly useful if you plan to share the mattress with a sleeping partner.

For another bonus, the Queen-Sized Serta iComfort CF4000 Firm Mattress has a Max Cool Cover. This cover, made from high-performance fibers, delivers an impressive burst of instant cool-to-the-touch sensation, working to prevent tossing and turning while you sleep.

Finally, the Queen-Sized Serta iComfort CF4000 Firm Mattress has a CertiPUR-US Certification. This certification proves the mattress has undergone rigorous, independent testing and met or exceeded quality expectations.

In conclusion, the Queen-Sized Serta iComfort CF4000 Firm Mattress is a great choice for back and side sleepers alike. For many nights of exceptional comfort, consider adding the Queen-Sized Serta iComfort CF4000 Firm Mattress to your guest room, bedroom, or living space today.