Serta iSeries NXG 3500 Hybrid Mattress

The Serta iSeries NXG 3500 is specifically engineered with a firm feel, making it best suited for back and stomach sleepers who require more lumbar support. While it features pressure-relieving memory foam, side sleepers may find the surface too firm to allow for proper shoulder and hip sinkage.

The Flex Head design allows the top portion of the mattress to be adjusted independently for each side, enabling you to raise your head while your partner keeps theirs flat. Because the mattress is designed for this specific base, it provides the necessary flexibility to move without compromising the structural integrity of the hybrid core.

No, this model is designed with multiple cooling features to regulate temperature. It includes a CoolFeel cover and Carbon Fiber Memory Foam, which actively works to draw heat away from your body throughout the night.

The mattress features an excellent motion isolation level thanks to its pocketed coil system and high-density memory foam layers. These components work together to absorb movement, ensuring that motion on one side of the bed is not transferred to the other.

Yes, all foam used in the Serta iSeries NXG 3500 is CertiPUR-US® certified. This means the materials are made without ozone depleters, mercury, lead, or other heavy metals, and have low VOC emissions for indoor air quality.

The 5-zone coil system provides targeted support by adjusting the tension across different areas of the mattress. This ensures that heavier parts of your body, like your hips and shoulders, receive the appropriate level of support while maintaining proper spinal alignment.