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Serta iComfort EFX Collection Reviews

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Serta iComfort EFX

iComfort EFX is the newest collection in the Serta iComfort series of memory foam mattresses. At this time, the iComfort EFX collection has five models: Brilliant EFX, Visionary EFX Plush, Visionary EFX Cushion Firm, Intellectual EFX and Aura EFX.

The "EFX" in iComfort EFX stands for EverFeel Technology, the combination of materials and construction in this collection. Serta claims that the difference in the iComfort EFX mattresses is their foam: "All foam is not created equal." The foams used in these mattresses are Cool Action™ Dual Effects® Gel Memory Foam, Cool Action™ Gel Memory Foam, Comfort Last® Foam, EverCool® Memory Foam, Serta® PillowSoft™ Foam, and Serta Support Foam. The first three are used in all EFX models, and the last three in selected models. Serta's explanation is that in their gel foams, the gel is "actually infused directly into our exclusive premium memory foam while the foam is being produced."

Cool Action™ Dual Effects® Gel Memory Foam - This memory foam is infused with two kinds of gel, one for support and one for cooling. These are called MicroSupport® and MicroCool+™. The Cool Action™ Gel Memory Foam has just the Microcool+. The gel is in addition to the open-cell structure of the memory foam. Also, according to the company, their foams have twice as much gel as "discount" foams, and is also denser. Serta says that these materials keep relieving pressure under a wide range of home temperatures.

iComfort EFX mattresses also feature Ultimate Edge and Avantec™ Performance Fabric. Ultimate Edge is the edge support for the sleeping surface. Avantec, in the cover, is a blend of polyester, Tencel and lycra. The Tencel controls moisture and temperature.

The models in Serta's iComfort EFX collection range in firmness from ultra plush to ultra firm, and from 9" to 13" in height. They are available through national department store chains, such as Sears, Macy's and J.C. Penney, as well as numerous local and regional retailers, both online and in stores. These mattresses have a 25-year limited warranty.

  • Mattress and Bed Set Model Name

    Serta iComfort EFX Collection

  • Price Category


  • Listed Manufacturer


  • Location

    Serta International, Customer Service Department, 3 Golf Center #392, Hoffman Estates, IL 60169, 1-888-55-SERTA (1-888-557-3782)

  • Bed Classification

    Memory foam

  • Level of Firmness


  • Inner Bed Composition

    Serta's Comfort Last foam core, Cool Action Gel Memory Foam and Cool Action Dual Effect Memory Foam

  • Mattress Edge Support

    Ultimate Edge

  • Mattress Cover Composition

    Blend of polyester, Tencel and lycra

  • Total Mattress Height

    from 9 to 13 inches, depending on model

  • Bed Foundation

    StabL Base platform or Serta Motion adjustable bed

  • Special Features

    Two kinds of gel infused into memory foam

  • Sleep Trial

    not stated

  • Bed Warranty

    25-year limited warranty

  • Manufactured In


  • Restrictions

    Keep in sanitary condition, and provide proper foundation

  • Website


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