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Split Head Queen Size Serta iSeries NXG 3500 Medium Mattress w/Adjustable Base
FREE DELIVERY in Houston Area! Questions about delivery? Call Mack at (281) 844-1963
Serta iSeries NXG 3500 Medium All-Foam Split-Head Queen Mattress with Flex Adjustable Base — Dual Comfort, Personalized Luxury & Smart Technology
Bring home the best of both worlds with the Serta iSeries NXG 3500 Medium All-Foam Split-Head Queen Mattress with Flex Adjustable Base, available today at Gallery Furniture. You’ll enjoy everything customers already love about the NXG 3500 series — cooling comfort, targeted pressure relief, and premium all-foam construction — now enhanced by a split-head design and an advanced Flex Adjustable Base that lets each sleeper personalize their position.
The head section of the mattress is divided, allowing independent movement on each side — ideal for couples who want shared body support but customized head elevation. Whether you’re winding down with a book, catching a show, or easing nighttime discomfort, the Flex Base gives you effortless control at your fingertips.
Key Features
Split-Head Queen Design
Enjoy one continuous mattress surface with individualized head movement on each side for dual comfort and zero sleep compromise.
Flex Adjustable Base Included
Features power head and foot lift, gentle full-body massage settings, and built-in speakers that play white noise or soothing sounds for deep, relaxing sleep.
All-Foam Construction
No coils — just premium performance foams that contour to your body, relieve pressure, and promote full-body alignment.
Cool-to-the-Touch Cover
Breathable and temperature-regulating, this fabric keeps you comfortably cool through even the warmest Houston nights.
Advanced Pressure Relief
Multiple layers of high-density comfort foams cradle shoulders, hips, and lower back for restorative sleep every night.
Reinforced Edge Support
Designed for easy entry, exit, and consistent stability all the way to the edge.
Medium Feel Comfort
Balanced between plush and firm for couples and all sleeping positions.
Durable Performance Foams
Crafted for years of dependable use without sagging — backed by Serta’s trusted reputation for quality.
Why Choose the NXG 3500 Split-Head Queen with Flex Base?
If you love the soothing contour of foam and want the freedom to sleep or relax your own way, this is your perfect match. The NXG 3500 Split-Head Queen with Flex Base combines cutting-edge foam technology with adjustable innovation, delivering a custom comfort experience built for two.
Enjoy independent head control, full-body support, massage, and built-in sound therapy — all while resting on one seamlessly shared mattress.
What Gallery Furniture Does for You
-
Buy Today, Get It Today — Free, Free, Free same-day delivery throughout the Greater Houston area.
-
Professional setup and haul-off of your old mattress and foundation (we remove only what we replace).
-
Personal service before, during, and after the sale — backed by Mattress Mack and the Gallery Furniture team you know and trust.
⭐ Customer Reviews
★★★★★ “Life-Changing Comfort!”
“My husband likes to sit up and read while I sleep flat — the split-head Flex Base makes it perfect for both of us. Delivery was fast, setup was easy, and the comfort level is unbelievable.” — Rachel M., Katy TX
★★★★★ “Houston’s Best Mattress Store!”
“Gallery Furniture delivered this same day, and the crew even hauled off our old set. The adjustable base massage and white-noise speakers help me fall asleep faster than ever.” — Kenny L., Houston TX
Frequently Asked Questions
Q: Does each side of the split-head move independently?
A: Yes. Each sleeper has individual control of the head section using separate remotes, while the foot portion moves in unison for shared support and stability.
Q: Can the Flex Adjustable Base be used with other mattresses?
A: Yes, but it works best with split-head mattresses designed for flex bases like this one to maximize the range of motion and comfort features.
Q: Does Gallery Furniture offer same-day delivery on this set?
A: Absolutely! When you order today, Gallery Furniture will deliver and set up your new Serta Split-Head NXG 3500 and Flex Base within hours — not days — in the Greater Houston area.
Q: Is the massage and sound feature optional?
A: Yes. You can customize each feature using the wireless remote — turn on head or foot massage independently and play relaxing white noise or nature sounds through the built-in speakers.
Serta iSeries NXG 3500 Medium All-Foam Split-Head Queen Mattress with Flex Adjustable Base — Dual Comfort, Personalized Luxury & Smart Technology
Bring home the best of both worlds with the Serta iSeries NXG 3500 Medium All-Foam Split-Head Queen Mattress with Flex Adjustable Base, available today at Gallery Furniture. You’ll enjoy everything customers already love about the NXG 3500 series — cooling comfort, targeted pressure relief, and premium all-foam construction — now enhanced by a split-head design and an advanced Flex Adjustable Base that lets each sleeper personalize their position.
The head section of the mattress is divided, allowing independent movement on each side — ideal for couples who want shared body support but customized head elevation. Whether you’re winding down with a book, catching a show, or easing nighttime discomfort, the Flex Base gives you effortless control at your fingertips.
Key Features
Split-Head Queen Design
Enjoy one continuous mattress surface with individualized head movement on each side for dual comfort and zero sleep compromise.
Flex Adjustable Base Included
Features power head and foot lift, gentle full-body massage settings, and built-in speakers that play white noise or soothing sounds for deep, relaxing sleep.
All-Foam Construction
No coils — just premium performance foams that contour to your body, relieve pressure, and promote full-body alignment.
Cool-to-the-Touch Cover
Breathable and temperature-regulating, this fabric keeps you comfortably cool through even the warmest Houston nights.
Advanced Pressure Relief
Multiple layers of high-density comfort foams cradle shoulders, hips, and lower back for restorative sleep every night.
Reinforced Edge Support
Designed for easy entry, exit, and consistent stability all the way to the edge.
Medium Feel Comfort
Balanced between plush and firm for couples and all sleeping positions.
Durable Performance Foams
Crafted for years of dependable use without sagging — backed by Serta’s trusted reputation for quality.
Why Choose the NXG 3500 Split-Head Queen with Flex Base?
If you love the soothing contour of foam and want the freedom to sleep or relax your own way, this is your perfect match. The NXG 3500 Split-Head Queen with Flex Base combines cutting-edge foam technology with adjustable innovation, delivering a custom comfort experience built for two.
Enjoy independent head control, full-body support, massage, and built-in sound therapy — all while resting on one seamlessly shared mattress.
What Gallery Furniture Does for You
-
Buy Today, Get It Today — Free, Free, Free same-day delivery throughout the Greater Houston area.
-
Professional setup and haul-off of your old mattress and foundation (we remove only what we replace).
-
Personal service before, during, and after the sale — backed by Mattress Mack and the Gallery Furniture team you know and trust.
⭐ Customer Reviews
★★★★★ “Life-Changing Comfort!”
“My husband likes to sit up and read while I sleep flat — the split-head Flex Base makes it perfect for both of us. Delivery was fast, setup was easy, and the comfort level is unbelievable.” — Rachel M., Katy TX
★★★★★ “Houston’s Best Mattress Store!”
“Gallery Furniture delivered this same day, and the crew even hauled off our old set. The adjustable base massage and white-noise speakers help me fall asleep faster than ever.” — Kenny L., Houston TX
Frequently Asked Questions
Q: Does each side of the split-head move independently?
A: Yes. Each sleeper has individual control of the head section using separate remotes, while the foot portion moves in unison for shared support and stability.
Q: Can the Flex Adjustable Base be used with other mattresses?
A: Yes, but it works best with split-head mattresses designed for flex bases like this one to maximize the range of motion and comfort features.
Q: Does Gallery Furniture offer same-day delivery on this set?
A: Absolutely! When you order today, Gallery Furniture will deliver and set up your new Serta Split-Head NXG 3500 and Flex Base within hours — not days — in the Greater Houston area.
Q: Is the massage and sound feature optional?
A: Yes. You can customize each feature using the wireless remote — turn on head or foot massage independently and play relaxing white noise or nature sounds through the built-in speakers.
Gallery Furniture takes great pride in the quality and craftsmanship of our furniture. We know that buying furniture for your home is a serious financial decision, as well as an emotional investment for you and your family. That's why Gallery Furniture takes pride not only in the furniture we sell but also in our commitment to customer service.
To learn more about our return and exchange policy, please visit our page by clicking the button below.
Questions about delivery? Call or text Mack at (281) 844-1963