• Serta iSeries NXG 3500 Hybrid Firm Mattress
  • Serta iSeries NXG 3500 Hybrid Firm Mattress

Serta

Serta iSeries NXG 3500 Hybrid Firm Mattress

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Why You’ll Love It

Firm
1 5 10
Soft
  • adjustable friendly

    Upgrade to better sleep— elevate your support and discover the perfect mattress with adjustable bed base compatibility.

  • hybrid mattress

    Can’t choose between foam or springs? Get the sleep you dream of with the best of both worlds.

Description

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:

  • CertiPUR-US® Certified Foams – Tested for low VOC emissions and made without harmful chemicals.
  • Long-Lasting Hybrid Construction – Designed to maintain structure and support over time.
  • Made in the USA with Global Components

Quilt: CoolFeel™ Cover provides an immediately cool sleep surface

Comfort Layers:

  • Carbon Fiber Memory Foam channels heat away while contouring
  • NXG™ Memory Foam delivers premium pressure relief

Support System: 1000 Series 5-Zone Coil Support System with BestEdge® Support for enhanced alignment and edge stability

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:

We have purchased all of our bedding for the last 30 years from City Mattress and your products and services have been consistently excellent. Thank you!!! Newton B. Green II