King Serta iComfort Hybrid CF2000 12.5 Inch Firm Mattress. An Amazingly Hard Feel.

The comfort scale rating of 1.5 on the CF2000 Firm makes it the firmest model in the collection. This mattress feels incredibly dense and isn't recommended, unless you know you love one of the firmest feels around.

King Serta iComfort Hybrid CF2000 12.5 Inch Firm Mattress. Top Quality Comfort Materials.

Carbon Fiber Memory Foam, Gel Active Max Memory Foam, and EverCool Fuze Gel Foam, the CF2000 Firm has it all. These premium materials are among the best in the Serta line and will help provide better pressure relief to help reduce tossing and turning, while promoting excellent comfort life expectancy.

King Serta iComfort Hybrid CF2000 12.5 Inch Firm Mattress. A Great Choice If you Love An Extra Firm Comfort.

The CF2000 Firm may not be for everybody, due to it's exceptionally firm feel, but if it's for you, you're going to love it. From the quilt to the coil system, this mattress is packed with premium materials designed to provide cool, comfortable sleep, well into the next decade.

King Serta iComfort Hybrid CF2000 12.5 Inch Firm Mattress. Less Motion Transfer.

From the coil system to the comfort materials, the CF2000 Firm is all about helping you sleep soundly, with less disturbance due to motion. This means whether it's a pet, child, or partner getting in or out of bed, you're going to feel less motion on your side and remain sleeping undisturbed.

King Serta iComfort Hybrid CF2000 12.5 Inch Firm Mattress. Top of the Line Coil System.

The 1025 iComfort Hybrid Support System with Best Edge Foam Encasement provides solid support while contouring to the curves of your body. This system helps isolate motion transfer when movement occurs for undisturbed sleep, and is adjustable base friendly. The Best Edge Foam Encasement keeps comfort consistent, even when sleeping to the edge.

King Serta iComfort Hybrid CF2000 12.5 Inch Firm Mattress. Cooler Sleep Through Technology.

An Exclusive Cold Touch Cover and Carbon Fiber Memory Foam layer combine to provide a cooler night's sleep, which has been shown to increase overall sleep quality. The Cold Touch Cover provides a cool initial feel, while the carbon fiber acts as a heat sink, pulling heat away from the surface.

King Serta iComfort Hybrid CF2000 12.5 Inch Firm Mattress. My Take on the iComfort Hybrid CF2000 Firm.

The CF2000 Firm mattress may not be for everybody, due to it's extremely firm feel, but if that sounds great to you, it's got a ton of great features designed to promote cool, comfortable sleep.

Full Serta Perfect Sleeper Hotel Congressional Suite Supreme II Euro Pillow Top. If you like a firm, but not hard comfort, you'll love this mattress.

With a comfort scale rating of 4.5 out of 10, the Congressional Suite is a perfect fit for anyone who enjoys a firm comfort that also contours well to the lower back. The 2 inch layer of Gel Active foam uses quality poly foam blended with gel for better performance and a more comfortable feel. All the comfort foam used in the Congressional Suite is CertiPUR-US certified for quality and durability.

Cal King Serta Perfect Sleeper Hotel Congressional Suite. If you prefer firm but not hard comfort, this is perfect for you.

Scoring a Comfort Scale rating of 4.5 out of 10, the Congressional Suite is an ideal fit for anyone who enjoys a firm feel that also closely contours to the lower back. The 2-inch layer of Gel Active foam incorporates quality poly foam blended with gel to achieve better performance and a more comfortable feel. All the comfort foams that make up the Congressional Suite are CertiPUR-US certified for quality and durability.

Twin Serta Perfect Sleeper Elkins II Firm 9 Inch Mattress. Extra Firm. The Elkins II Firm has a comfort scale rating of 2.5 out of 10, with 10 being the softest. This means you can expect it to feel firm to quite firm.

For this reason, back sleepers and stomach sleepers will do better than side sleepers. Solid Coil System. The 825 Edition Custom Support IWC coil system uses an individually wrapped design where each coil contours independently. This system provides an individualized support that's both solid and forgiving.