A split king adjustable bed may be right for couples who want individualized comfort while sharing the same bed. Each side can feel and move independently, but the setup usually requires two mattresses, two adjustable bases and split king bedding.
Bottom Line
A split king adjustable bed is made from two Twin XL mattresses placed side by side on two compatible adjustable bases. Together, they provide the same overall sleeping surface as a standard king mattress while giving each person control over their side.
Best For
A split king bed can be a good fit when partners:
Prefer different firmness levels
Sleep in different positions
Keep different sleep schedules
Want to raise or lower their side independently
Are easily disturbed by movement
Have different temperature preferences
One person can sit up to read while the other remains flat. Each person can also adjust their own Sleep Number® setting when using a compatible Sleep Number mattress.
Think Twice If
A split king may not be the best fit if you frequently sleep in the center of the bed, want to use standard king sheets or prefer the simplicity of one mattress and one base.
It can also cost more than a traditional king setup because you are purchasing separate components for each side.
What Is a Split King Adjustable Bed?
A split king adjustable bed consists of two Twin XL mattresses and two Twin XL adjustable bases. The two sides sit next to each other to create one king-size sleeping surface.
Unlike a standard king mattress, each half can be adjusted without changing the position of the other side.
·The Two-Mattress Setup: Each sleeper has an individual Twin XL mattress and base. That separation makes it possible to personalize both comfort and position. With compatible Sleep Number mattresses, partners can select different Sleep Number® settings. When paired with an adjustable base, they may also be able to raise or lower the head and foot of each side independently.
·Matching King Dimensions: The standard split king mattress size is 76 inches wide by 80 inches long when both Twin XL mattresses are placed together. That is the same overall footprint as a standard king mattress. Each Twin XL mattress is approximately 38 inches wide by 80 inches long.
·Split King vs. Split California King: A standard split king is made from two Twin XL mattresses and measures 76 inches wide by 80 inches long when combined. A split California king has different dimensions and may use less common mattress and bedding sizes. Before purchasing either configuration, confirm that the mattresses, bases, bed frame and sheets are designed to work together.
How Does a Split King Adjustable Bed Work?
A split king adjustable bed works by giving each side its own mattress, adjustable base and controls. One person can elevate the head or feet on their side without moving the other person’s side.
Independent Controls
Each adjustable base typically has its own remote or compatible control. This lets partners choose different positions based on how they sleep, rest or relax.
For example, one person might raise the head of the bed to read while the other keeps their side flat. A sleeper may also choose gentle elevation on their side without requiring their partner to use the same position.
Available positions and features depend on the adjustable base model.
