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Adjustable Base | 3.0 Plus

Adjustable Base | 3.0 Plus

Most Popular + Massage Feature

3.1k+ people bought

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  • Personalized Comfort & Convenience: Enjoy the ultimate relaxation with the adjustable head and feet positions, complemented by a soothing dual zone massage feature. Easily find and save your favorite positions for consistent comfort.
  • Intuitive Control & Accessibility: Effortlessly adjust settings with a backlit wireless remote, featuring a handy flashlight for ease in the dark. Simple, accessible comfort control.
  • Ambient and Customizable Design: Enhance your bedroom's ambiance with subtle under-bed lighting, and tailor the bed's profile to your preference with adjustable leg heights for the perfect look and feel.
Size Size guide

Twin XL












Split King



Total Price
$900.00 $1,299 Save $399

In stock. Delivery by July 18

Our benefits

1,400+ Five Star Reviews

Free One-Day Delivery

20 Year Warranty

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Product Details

Elevate your sleep with the 3.0 Plus Adjustable Base, exclusively at Mattress King. Our most popular adjustable base combines advanced functionality with unmatched comfort, setting the standard for a restful night. Key features include:

  • Customizable Comfort: Find your perfect sleep or relaxation position with programmable settings, allowing you to raise your head and feet effortlessly.
  • Enhanced Support & Durability: Robustly built, this base supports up to 850 lbs, ensuring stability and longevity with a 20-year limited warranty.
  • Soothing Massage & Convenience: Experience sleep-enhancing dual zone massage and enjoy the convenience of a remote flashlight for nighttime ease.
  • Versatile Design: Tailor the base to your room's aesthetics with adjustable leg heights, ensuring a seamless fit with all of our mattresses.


Enjoy peace of mind with our Adjustable Base | 3.0 Plus, which comes with a comprehensive 20-year manufacturer warranty. For complete warranty information and details, please click here.

Where it’s made

Made in China

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Explore the Advanced Adjustable Base | 3.0 Plus

Elevate your rest with the 3.0 Plus Adjustable Base, exclusive to Mattress King. It features programmable remote settings, adjustable leg heights, soothing massages, a handy remote flashlight, and is perfectly compatible with all our mattresses. Experience unparalleled comfort and convenience with this best-selling base.

visual of Versatile Smart Remote

Versatile Smart Remote

Effortlessly adjust head and foot positions, engage soothing back and leg massages, and program your favorite settings. The wireless remote also controls under-bed lighting and includes a convenient flashlight. Ultimate ease at your fingertips.


Relaxing Quiet Massage

Relax with our multi-level, whisper-quiet massage. Target both upper and lower body with various intensities and settings, including wave, pulsating, and constant modes. Experience serene relaxation and muscle relief.

visual of Convenient Under Bed Lights

Convenient Under Bed Lights

Easily locate items under your bed or create a soothing ambiance with our under-bed lights. These convenient, remote-controlled lights offer the perfect balance of functionality and comfort for nighttime needs.

Customer Reviews

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1,506 reviews

Frequently Asked Questions

What type of sheets are recommended for a split adjustable bed in King size?

For a split adjustable bed in King size, which typically consists of two Twin XL mattresses, the ideal choice is a set of Split King sheets. These sheets include two Twin XL fitted sheets to accommodate the independent movement of each side of the adjustable bed, along with one King size flat sheet for complete coverage. Additionally, consider a Split King mattress protector set, comprising two Twin XL mattress protectors, to ensure complete protection and comfort for your adjustable bed setup.

What is a Split King adjustable bed?

A Split King adjustable bed is an ideal solution for couples who want independent control over their sleeping positions while still enjoying the spaciousness of a king-size bed. This setup involves two Twin XL adjustable bases and mattresses placed side by side, creating the dimensions of a standard king bed. This unique configuration allows each person to adjust their side of the bed independently, offering personalized comfort. Split King beds are also complemented by specialized bedding, known as split king sheets, which include two Twin XL fitted sheets and one king flat sheet, ensuring a seamless look and feel. To explore our range of sheets perfect for Split King beds, visit our Mattress King sheets page.

Can the height of the adjustable base be adjusted?

Some adjustable bases come with standard leg heights or offer a 3-In-1 design for adjustability. Others might not have height adjustment options. Our 2.0 and 3.0 adjustable bases have this 3 in 1 design so you can achieve the desired height you're looking for.

What is the difference between Twin and Twin XL?

The primary difference between Twin and Twin XL mattresses lies in their length. A standard Twin mattress measures 38 inches in width and 75 inches in length. In contrast, a Twin XL mattress has the same width of 38 inches but offers an additional 5 inches in length, totaling 80 inches. This extra length in the Twin XL makes it a suitable choice for taller individuals or for use in college dorm rooms, where extra legroom can be particularly beneficial. Both sizes are often used in smaller bedrooms, guest rooms, or for children's beds, but the Twin XL's extra length can provide more comfort for growing teens and adults.

Is a box spring necessary with an adjustable bed?

No, a box spring will not work with an adjustable bed. The design of an adjustable bed is self-supporting, offering all the support your mattress needs. This setup ensures proper mattress support and function while using the adjustable features.

Can I use a bed frame or headboard with an adjustable base?

Yes, adjustable bases fit standard dimensions and can comfortably sit inside a bed frame. If your frame has slats, they should be removable so the adjustable base can rest inside the cavity of you bed frame. Optional headboard brackets are available for attaching a standalone headboard.

Is there a return or trial policy for the adjustable base?

At Mattress King, the adjustable bases are not eligible for a trial period. Additionally, we do not offer a specialized return policy for these items beyond our standard return policy. It's important for customers to carefully consider their purchase of an adjustable base, as the standard return policy terms will apply. We encourage customers to review our standard return policy here for more detailed information and to ensure clarity on the conditions and processes involved.

What mattresses are compatible with adjustable beds?

Most modern mattresses, including individual pocketed coil, hybrid, memory foam, latex, or gel, are compatible with adjustable bases. Their flexible design conforms to the movement of the base. Old style mattresses with open coils and a border wire are not compatible because the border wire won't conform to the adjustable base. It's always best to check with a representative to confirm compatibility.

How do adjustable beds work?

Adjustable beds, also known as electric beds, allow personalized comfort through a metal frame with pivot points and actuators. You can adjust the head and foot sections independently using a remote control, catering to your preferred sleeping or sitting position.