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Perfect Day iSeries Triumph Reviews

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Perfect Day iSeries Triumph

Triumph is a model in the Perfect Day iSeries by Serta. This hybrid mattress series features Serta's iSeries Technology, a combination of Cool Action Gel Energy foam and Duet Coil individually wrapped coil-in coil system innerspring.

A Duet Coil is a dual coil, a 2-in-1 coil-in-a-coil design with a taller outer coil and shorter inner coil. The inner coil is separately wrapped as is the pair itself. Each dual coil responds independently to pressure put on it. This conforms support to the sleeper's body contours, relieving pressure points and suppressing motion transfer. The initial response is by the outer coil, a cushioning effect. As the compression reaches the inner coil, resistance rises for deep support. This pair will give under a lightweight user, but still support a heavy person, making it ideal for couples of widely differing sizes.

Cool Action is Serta's gel-infused memory foam. Visco-elastic memory foam responds to weight and heat, contouring itself to a sleeper's body. In the Perfect Day iSeries Triumph this is to provide pressure relief since the whole body is supported, not just a few prominent parts. However, memory foam tends to build up heat. This was first countered by ventilating the foam to allow air to pass through (such as with Serta's KoolComfort memory foam). Then manufacturers began to add either liquid gel or gel beads to the memory foam to draw heat away to dissipate. The gel in Cool Action is microencapsulated, what Serta calls Microsupport.

The 13.5" high Perfect Day iSeries Triumph is a plush mattress. Its zippered, stretch-knit cover is quilted with FireBlocker and soft foams. Its comfort section is a 2" layer of KoolComfort a 1" layer of Cool Action Gel Energy foam and a 1" layer of Cool Action gel memory foam.

Surrounding the Triumph mattress is Serta's BestEdge foam encasement, providing edge support.

Serta's recommended foundation for the Perfect Day iSeries Triumph is the Perfect Motion AdjustableBase. This adjustable bed comes with a wireless remote.

Serta has a 120-night sleep trial period for the Perfect Day iSeries Triumph and a 25-year limited warranty.

  • Mattress and Bed Set Model Name

    Perfect Day iSeries Triumph

  • 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

    Hybrid - coils and memory foam

  • Level of Firmness


  • Inner Bed Composition

    dual pocket coils and comfort layers of memory foam and gel memory foam

  • Mattress Edge Support

    Foam encasement

  • Mattress Cover Composition

    Stretch knit quilted with FireBlocker and soft foam

  • Total Mattress Height

    13.5 inches

  • Bed Foundation

    Adjustable bed or box spring

  • Special Features

    hidden handles for ease of lifting or turning

  • Sleep Trial

    120 days

  • Bed Warranty

    25-year limited warranty

  • Manufactured In


  • Restrictions

    Keep in sanitary condition, and provide proper foundation

  • Website


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