The Nectar Ultra is the top-tier all-foam mattress in the lineup, a tall 15-inch build that delivers the brand's deepest pressure relief. It packs roughly four times more contouring memory foam than the Classic, so the surface offers a plush, sink-in feel while a zoned ergonomic support layer reinforces the core to keep the spine aligned.Cooling is a headline feature: the Ultra uses about four times more cooling fibers than the Classic plus a temperature-regulating phase-change material to actively pull heat away from the body. Targeted tri-zone support firms up under the back and hips while staying softer at the shoulders, balancing cradling comfort with structure. 15-inch all-foam profile 4x more contouring memory foam than the Nectar Classic 4x more cooling fibers plus temperature-regulating phase-change material Zoned tri-zone ergonomic support layer With its medium-soft, deep-contouring feel, the Ultra suits side, back and combination sleepers who want pronounced sink-in comfort with supportive firmness. { "@context": "https://schema.org/", "@type": "Product", "name": "Nectar Ultra Memory Foam Mattress", "description": "The Nectar Ultra is the top-tier all-foam mattress in the lineup, a tall 15-inch build that delivers the brand's deepest pressure relief. It packs roughly four times more contouring memory foam than the Classic, so the surface offers a plush, sink-in feel while a zoned ergonomic support layer reinforces the core to keep the spine aligned. Cooling is a headline feature: the Ultra uses about four times more cooling fibers than the Classic plus a temperature-regulating phase-change material to actively pull heat away from the body. 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