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Every new iSeries mattress features Cool Action™ Dual Effects® Gel Memory Foam – Serta’s latest breakthrough in gel memory foam technology. This is the world’s first material to combine both our original MicroSupport® gel and our MicroCool+™ gel in a material with up to 25% more total gel than our original formula. Plus, we have upgraded our exclusive individually wrapped coil support system by adding even more Duet® Coils, which help properly balance comfort and support across the mattress regardless of body type.
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