Split Head Queen Size Serta iSeries NXG 3500 Firm Hybrid Mattress w/Adjustable Base

Serta iSeries NXG 3500 Firm Hybrid Split-Head Queen Mattress with Flex Adjustable Base — Dual Comfort, Cooling Performance & Firm Support for Couples

Find your perfect balance of independence and togetherness with the Serta iSeries NXG 3500 Firm Hybrid Split-Head Queen Mattress paired with the Flex Adjustable Base, available today at Gallery Furniture with Free, Free, Free Same-Day Delivery across the Houston area.
Designed for couples who want individualized head control without a full split design, this split-head queen system combines firm, supportive comfort with personalized adjustability for total-body relaxation and restorative sleep.

Key Features

Split-Head Design for Couples
Enjoy independent head adjustment on each side of the bed while maintaining a connected lower section for unified foot movement. Perfect for partners who read, relax, or recover at different angles but still prefer a single, seamless mattress surface.

Firm Support You Can Count On
Built with a 5-Zone Support Coil System that targets key areas — head, shoulders, lumbar, hips, and legs — to promote healthy alignment and reduce pressure on the back. The reinforced BestEdge® Foam Encasement ensures consistent edge-to-edge stability and lasting durability.

Pressure-Relieving Memory Foam
High-density memory foam provides deep-down contouring for muscles and joints while preserving a firm, supportive feel that’s ideal for back and stomach sleepers.

CoolFeel™ Cover + Carbon Fiber Memory Foam
A cool-to-the-touch CoolFeel™ Cover works with Carbon Fiber Memory Foam to pull heat away from the body, helping you stay cool and comfortable through warm Houston nights.

Motion Control System
Individual coils isolate motion to minimize partner disturbance, so both sleepers rest peacefully — even with independent head movement.

Flex Adjustable Base Included
Transform your bedroom into a relaxation and recovery zone with the Flex Adjustable Base, featuring:

• Power Head Lift & Foot Lift for customized positioning and zero-gravity comfort

• Power Lumbar Support to ease lower-back tension

• Zoned Massage Function to enhance circulation and reduce muscle stress

• Built-in Sound Speakers for soothing white noise or calming music

• Wireless remote and preset positions for effortless comfort control

Together, the NXG 3500 Firm Hybrid and Flex Base deliver the perfect mix of orthopedic support and modern wellness innovation.

Why Shop Gallery Furniture

• Buy Today, Sleep Tonight — Free, Free, Free Same-Day Delivery across Houston

• Free Set-Up and Haul-Off of your old mattress and base (haul-off applies to replacement items only)

• Professional In-House Delivery Team — never third-party crews

• Trusted Houston Experts committed to service before, during, and after the sale

Customer Reviews

⭐️⭐️⭐️⭐️⭐️ “The split-head design lets me elevate while my husband sleeps flat — and the firm support is perfect for both of us. Gallery Furniture delivered and set it up the same day!” – Tina & Marcus L., Houston, TX

⭐️⭐️⭐️⭐️⭐️ “The Flex base massage and lumbar features are incredible after long workdays. Cool, supportive, and built like a tank.” – Donna R., Spring, TX

FAQs

Q: How does the split-head queen work?
A: Each side of the head section adjusts independently, while the foot section remains connected for a seamless feel and easy movement.

Q: What features come with the Flex Adjustable Base?
A: Head and foot lift, power lumbar support, zoned massage, and built-in sound — all controlled wirelessly.

Q: Who is this mattress best for?
A: Back and stomach sleepers who want firm support and couples seeking dual-head adjustability with shared comfort.

Q: Does it sleep hot?
A: No — the CoolFeel™ Cover and Carbon Fiber Memory Foam draw heat away for a cool, comfortable sleep.

Q: Is this mattress made in America?
A: Yes — the Serta iSeries NXG 3500 Firm Hybrid is proudly designed and assembled in the USA.