Serta Mattress iSeries NXG 3500 Firm Hybrid Twin XL Mattress

The Serta iSeries NXG 3500 Firm Hybrid Twin XL Mattress delivers firm support and cooling comfort for a restorative night’s sleep. This mattress combines high-density NXG Memory Foam with a soft, cool-to-the-touch fabric cover and carbon fiber-infused foam to draw heat away from the body, ensuring a consistently comfortable sleep temperature. Its hybrid construction features a 5-zone coil system with alternating firm and plush areas for targeted support across the back and body, while BestEdge® technology provides durable edge-to-edge stability. Motion transfer is minimized, making it suitable for stomach and back sleepers, and the CertiPUR-US® certified foam ensures a safe, chemical-free sleep surface. Designed for compatibility with most bed frames, this mattress offers immediate pressure relief, lasting support, and reliable comfort for a deep, restful night.