General Overview. 00. Serta iComfort Dawn Mist Deluxe Firm Memory Foam Crib and Toddler Mattress | Waterproof | GREENGUARD Gold Certified | Trusted | Made in The USA . Pros. Usually ships within 3 to 5 weeks. 4.6 out of 5 stars 71. Serta Icomfort Hybrid 13" Blue Fusion 200 Plush Conventional Bed Mattress, King, Gray. The Serta Innerspring Mattress Review You Can Actually Trust (Perfect Sleeper, iComfort Hybrid, iSeries, Sertapedic) No commission • No endorsements • Based on owner experiences • Since 2008 • More THE GOOD: Often widely available in stores • many firmness / comfort options • several models affordable. Unbiased and detailed ratings are provided as well as several comparisons for popular brands including Tempur-Pedic Flex, Sealy Posturepedic Hybrid, Serta iSeries and Simmons Beautyrest Recharge and Black, and Sapira. Serta offers innerspring and hybrid mattresses and are common at many mattress big box and retail outlets. $1,799.00 $ 1,799. FREE Shipping. The Hybrid 1000 Firm is an average-firm mattress designed for maximum comfort, support, and pressure relief.Its medium-firm feel is best for side sleepers, who want their hip and shoulder to sink into the mattress a little to keep the spine aligned.The 1000 Firm’s design targets pressure points for maximum relief. Memory foam mattresses in the Perfect Sleeper and iComfort series have been touted for above-average edge support, motion isolation, and noise reduction. They are also designed to keep people from sleeping hot. Every iSeries Hybrid mattress features a cooling gel memory foam, an innerspring support system with individually wrapped coils, and cooling cover. Sleep Like The Dead reviews and rates hybrid mattress beds based on over 1200 actual owner experiences. Serta also offers innerspring and hybrid mattresses, as well. 5.0 out of 5 stars 3. All Serta iSeries® Hybrid mattresses are designed and assembled in the USA, leveraging Serta’s 85 years of manufacturing expertise. Meet Our Testing Team Jeremy Brad Jackson Keith. $199.07 $ 199. Serta iSeries Hybrid 1000 Firm Mattress. To learn more, please visit our Serta Innerspring and Hybrid Mattress Review page. Serta has been in the mattress business for a long time and offers both classic innerspring designs and innovative all-foam and hybrid mattresses. You have likely heard the brand name on the radio. Serta’s new iSeries Hybrid line offers the pressure relief of their patented foam technology and the support and contouring of their coil systems. Plus, all Serta foams are Certi-Pur® certified, meeting their standards for content, emissions and durability, and are analyzed by independent, accredited testing laboratories. 07 $229.99 $229.99.