Split-Head King
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Split-Head King Mattresses
A split-head king mattress gives couples the comfort of a full king with the flexibility of independent adjustment: the top third splits into two sections that raise and lower separately on an adjustable base, while the foot stays joined so there's no gap under your legs. Because Mathis Sleep manufactures its own house-brand mattresses, you can compare our house-made split-head king models against the national brands we carry in one place. Pair any split-head king with one of our adjustable bases to get the most from the design.
What Is a Split-Head King Mattress?
A split-head king mattress is a standard king (76" × 80") divided at the head into two independently adjustable halves, joined as one piece from the hips down. It lets two sleepers raise or recline their upper bodies separately on an adjustable base — one partner can sit up to read while the other lies flat — without the full-length split of a split king.
Split-Head King vs. Split King
The difference is where the mattress splits. A split-head king divides only at the head and stays connected at the foot, so it feels like one continuous surface. A split king is two separate Twin XL mattresses placed side by side, split all the way down — this allows fully independent motion but leaves a seam through the middle. Choose a split-head king if you want independent head adjustment without a center gap.
Who Makes Split-Head King Mattresses?
Mathis Sleep manufactures its own split-head king mattresses, including Ecocomfort and other house-brand models, and also carries split-head king options from national brands such as Beautyrest and Tempur-Pedic. Because we both manufacture and sell mattresses, we can compare our house-brand split-head king models against the national brands we carry with a maker's understanding of how each one is built.
Split-Head King Mattress FAQs
What size is a split-head king mattress?
A split-head king measures 76 inches wide by 80 inches long — the same overall footprint as a standard king. Only the head section is split, so it uses standard king bedding, though a split-head fitted sheet (or two Twin XL fitted sheets up top) fits the divided head best.
Do you need an adjustable base for a split-head king mattress?
A split-head king is designed to be used with an adjustable base — that's what allows each side to raise and lower independently. On a flat foundation it works like a regular king, but you lose the independent-adjustment benefit that makes the split-head design worthwhile.
Can you buy a split-head king mattress only, without a base?
Yes. You can buy a split-head king mattress on its own to pair with an adjustable base you already own, or purchase the mattress and base together as a set. Confirm your existing base supports a split-head configuration before ordering the mattress only.
Is a split-head king the same as a Flex Head King?
Yes. "Flex head king" and "split-head king" are different names for the same design: a king mattress split only at the head so each sleeper can adjust their upper body independently, with the foot of the bed joined as one piece.
Are split-head king mattresses good for couples?
Split-head king mattresses are ideal for couples with different sleep preferences. Each person can adjust their side for reading, watching TV, easing snoring or acid reflux, or relieving pressure, while the joined foot keeps the bed feeling like one surface rather than two.