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Indulge in the ultimate luxury sleep experience with the Serta® iSeries® NXG™ 4500 Ultra Plush Foam Mattress, where premium comfort meets next-generation sleep innovation. This meticulously crafted all-foam mattress delivers immediate cooling relief, exceptional pressure relief, and ultra-plush contouring support that cradles your body in cloud-like comfort—perfect for side sleepers seeking deep pressure relief and luxurious cushioning. Featuring innovative NXG Memory Foam technology and a premium high-density foam core surrounded by Ultimate Edge™ Support, this ultra-plush mattress creates the perfect sleep sanctuary for those who prefer a softer, more body-hugging feel. Experience how advanced cooling technology, contouring memory foam, and plush comfort layers work together to deliver nights of deeper, more restorative sleep wrapped in luxurious softness.


Experience refreshing sleep from the moment you lie down with immediate cooling technology that eliminates heat buildup before it disrupts your rest. The CoolFeel™ Cover delivers that instantly refreshing cool-to-the-touch sensation that helps your body transition into sleep mode faster, eliminating the uncomfortable warmth that can delay sleep onset and interrupt your restful nights.
Working seamlessly with the cover, Carbon Fiber Memory Foam continuously pulls heat away from your body throughout the night, effectively redistributing warmth and maintaining a balanced sleep temperature. This integrated dual-layer cooling approach keeps you comfortably cool from bedtime through morning, transforming hot, restless nights into refreshing, uninterrupted sleep experiences—essential for side sleepers who need extended comfort throughout the night.

The 4500 Ultra Plush Foam incorporates innovative NXG™ Memory Foam—a premium, high-density memory foam that delivers exceptional contouring pressure relief with luxurious ultra-plush cushioning. This advanced foam technology adapts to your body's natural contours, distributing weight evenly and eliminating pressure points that can cause discomfort, all while providing the deep cushioning essential for side sleepers who need enhanced shoulder and hip relief.
Ideal for side sleepers who need deep pressure relief, the NXG Memory Foam contours to your unique shape, allowing your shoulders and hips to sink comfortably into the plush surface while maintaining proper spinal alignment. The ultra-plush feel ensures pressure-sensitive areas like your shoulders, hips, and side receive the relief they need, creating a sleep surface that cradles your body in luxurious comfort while eliminating the pressure points that can disrupt restorative sleep.

The premium high-density foam core represents a sophisticated approach to all-foam mattress support. This intelligent design features a dense, supportive foundation that works seamlessly with the plush comfort layers to provide consistent support throughout the entire sleep surface. Unlike traditional foam mattresses that may lack edge support, this advanced construction ensures every inch of your mattress delivers reliable support.
Your entire body benefits from the uniform support provided by the high-density foam core, which maintains proper spinal alignment while allowing the ultra-plush comfort layers above to contour to your shape. This precision-engineered approach ensures every part of your body receives the ideal combination of plush cushioning and supportive foundation, promoting healthy sleep posture and reducing the morning stiffness or discomfort that can result from inadequate support.

Enjoy the tranquility of undisturbed sleep with the 4500 Ultra Plush Foam's sophisticated motion control design. The strategic combination of memory foam layers works harmoniously to absorb and minimize the impact of your partner's movements, ensuring that nighttime activity doesn't disrupt your restful sleep. All-foam construction excels at motion isolation, creating a sleep surface that absorbs movement rather than transferring it.
This motion-isolating technology proves especially valuable for couples with varying sleep schedules or different movement patterns. Whether your partner rises early, shifts positions frequently, or gets in and out of bed during the night, you'll experience uninterrupted sleep thanks to the mattress's ability to contain and isolate motion within individual sleeping zones. The all-foam design provides superior motion absorption compared to hybrid models, making it ideal for light sleepers.

Ultimate Edge™ Support technology guarantees that every square inch of your mattress delivers consistent support and stability, from the center to the very perimeter. This advanced edge support system prevents the sagging and compression common in traditional all-foam mattresses, maximizing your usable sleep surface and providing a solid, stable edge for sitting or sleeping near the perimeter.
Whether you prefer sleeping near the edge, need additional space for stretching out, or simply value the confidence of knowing your mattress maintains its shape over time, Ultimate Edge™ Support provides lasting edge-to-edge stability. This technology ensures your mattress preserves its support characteristics throughout its entire lifespan, delivering consistent comfort and plushness wherever you choose to sleep, even when positioned near the edge.

The iSeries NXG 4500 Ultra Plush Foam is CertiPUR-US® Certified, ensuring all foam components undergo rigorous testing and verification to be free from harmful chemicals and gasses. This certification confirms that your mattress meets stringent standards for content, emissions, and durability, giving you complete confidence in the materials you sleep on every night.
This dedication to responsible manufacturing means you can sleep soundly knowing your mattress delivers not only exceptional comfort and support but also uncompromising safety for you and your family. The CertiPUR-US® certification reflects a commitment to quality, safety, and environmental responsibility that goes beyond comfort to encompass your complete health and well-being.
79.5"L x 39"W x 13.5"H
Weight: 90.75 lbs
74.5"L x 54"W x 13.5"H
Weight: 114.92 lbs
79.5"L x 60"W x 13.5"H
Weight: 133.65 lbs
79.5"L x 60"W x 13.5"H
Weight: 135.07 lbs
79.5"L x 76"W x 13.5"H
Weight: 167.5 lbs
83.5"L x 72"W x 13.5"H
Weight: 166.8 lbs
79.5"L x 76"W x 13.5"H
Weight: 167.8 lbs
The Serta® iSeries® NXG™ 4500 Ultra Plush Foam Mattress represents the pinnacle of luxury sleep innovation, combining premium comfort features with next-generation sleep technology. This ultra-plush all-foam design expertly delivers immediate cooling comfort, exceptional pressure relief, and luxurious contouring support, specifically engineered for side sleepers who require deep pressure relief and cloud-like cushioning without sacrificing temperature regulation or support.
With its innovative NXG Memory Foam, advanced cooling technology, and premium high-density foam core, the 4500 Ultra Plush Foam delivers a sleep experience that cradles your body in luxurious comfort while eliminating pressure points. The Ultimate Edge™ Support ensures lasting edge-to-edge stability, while CertiPUR-US® certification provides complete confidence in the quality and safety of your investment. Protected by a 100-night in-home trial and 10-year limited warranty, this mattress offers the ideal combination of ultra-plush comfort, cooling technology, and exceptional support in your purchase decision.
Serta® mattresses or foundations used with proper support are protected by a 10 year limited manufacturer’s warranty. Serta products are warrantied against manufacturing defects in workmanship and material (excluding covers and handles, except for handles on iSeries and equivalent level mattresses).
The warranty coverage runs from the original date of purchase. Replacement of the mattress or foundation does not extend its limited warranty or begin a new limited warranty period. Your warranty period is based on the code printed on your white law label as indicated on the Warranty Code Chart. The duration of any applicable implied warranties, including but not limited to the implied warranties of merchantability and fitness, shall not exceed the term of this limited warranty. (Some states do not allow limitations on how long an implied warranty lasts, so this limitation may not apply to you.) Serta® shall not be liable for incidental or consequential damages that result from the use of your Serta® product. (Some states do not allow the exclusion or limitation of incidental or consequential damages, so this exclusion may not apply to you.) No expressed or implied warranties are extended to persons who purchase the product from anyone other than Serta Simmons Bedding Company or its authorized dealers, and all warranties to such persons, including the implied warranties of merchantability and fitness, are hereby excluded.
If your Serta® mattress or foundation fails due to a manufacturing defect, the exclusive remedy under this warranty will be replacement of the defective product in the U.S., Puerto Rico or U.S. Virgin Islands. If the Serta® product you purchased is discontinued at the time of replacement, a current model of comparable quality and value will be selected. To receive service under the terms of this warranty contact your original Serta® dealer. If your original Serta® dealer is no longer in business or you have moved outside the service area, please contact Serta Customer Service at 1-888-55-SERTA (1-888-557-3782) between the hours of 9am to 5pm EST Monday - Friday. A copy of original bill of sale is needed to determine original date of purchase. Model name label and law label must be provided to identify the bedding and validate this warranty.
This warranty gives you specific rights, and you may have other rights, which vary from state to state. This warranty is extended only to the original purchaser from Serta Simmons Bedding Company or its authorized dealers.