Balanced comfort. Adaptive support. Advanced cooling.
The Serta iSeries NXG 3500 Hybrid Medium mattress is thoughtfully designed for sleepers who change positions throughout the night and couples with different comfort preferences. Built with a series of benefits for the sleep you want, it delivers immediate cooling, responsive pressure relief, and targeted coil support that adapts to your movements. Its medium feel offers the ideal balance of cushioning and stability, helping relieve pressure while maintaining healthy alignment.
The hybrid design enhances ease of movement, while motion-isolating foams help minimize disruptions from a partner’s movement. Zoned support reinforces the back and core, and cooling technologies maintain consistent comfort across the sleep surface for deeper, uninterrupted rest.
Best for combination sleepers and couples seeking balanced comfort, responsiveness, and cooling support.
Comfort Level: Medium
Made in the USA with Global Components
Mattress Type: Hybrid Mattress
Sleep Style: All Sleep Positions
Adjustable Base Compatible: Yes
Benefits: Balanced comfort, cooling relief, responsive support, motion isolation
Sustainability:
- CertiPUR-US® Certified Foams – Low-VOC materials support healthier indoor air quality.
- Durable Hybrid Design – Built for consistent performance and reduced replacement frequency.
Quilt: CoolFeel™ Cover provides immediate cooling comfort
Comfort Layers:
- Carbon Fiber Memory Foam with CoolFeel™ Plus System helps channel heat away
- NXG™ Memory Foam delivers adaptive contouring pressure relief
- Deep Reaction® Max Memory Foam enhances responsiveness
Support System: 1000 Series 5-Zone Coil Support System with BestEdge® Support for targeted back support and reinforced edges
Warranty: 10-Year Limited Warranty
Dimensions:
- Twin XL Size: 39" W × 79.5" L × 13.5" H
- Full Size: 54" W × 74.5" L × 13.5" H
- Queen Size: 60" W × 79.5" L × 13.5" H
- Split Head Queen Size: 60" W × 79.5" L × 13.5" H
- King Size: 76" W × 79.5" L × 13.5" H
- Split Head King Size: 76" W × 79.5" L × 13.5" H
- California King Size: 72" W × 83.5" L × 13.5" H
Recommended Foundation:
