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Expert Recommended Adjustable Base
Expert Recommended Foundation
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Our Experts average 8 years of experience to help you find everything you need to sleep better.
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Firm feel. Zoned support. Advanced cooling.
The Serta iSeries NXG 3500 Hybrid Firm mattress delivers a more robust, supportive sleep experience with enhanced height and advanced hybrid performance. Designed with a series of benefits for the sleep you want, it provides immediate cooling, deep pressure relief, and reinforced support where your body needs it most. Its firm feel offers consistent stability, while zoned coils help support proper alignment through the back and hips.
The added mattress height allows for more advanced comfort layering, while responsive coils improve ease of movement and durability. Cooling materials work together to help regulate temperature, creating a supportive yet comfortable sleep environment ideal for sleepers who want firm support with hybrid responsiveness.
Best for back and stomach sleepers who prefer firm, reinforced support with enhanced responsiveness.
Comfort Level: Firm
Made in the USA with Global Components
Mattress Type: Hybrid Mattress
Sleep Style: Back and Stomach Sleepers
Adjustable Base Compatible: Yes
Benefits: Firm support, cooling comfort, targeted alignment, responsive feel
Sustainability:
Quilt: CoolFeel™ Cover provides an immediately cool sleep surface
Comfort Layers:
Support System: 1000 Series 5-Zone Coil Support System with BestEdge® Support for enhanced alignment and edge stability
Recommended Foundation:
Twin XL Size: 39" W × 79.5" L × 13.5" H
Mattress Height: 13.5"
Mattress Shipping Weight with Box: 102.77 lbs.
10-Year Limited
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