Best overall
Big FigLuxe
Independent testers liked it for side sleepers, back sleepers, stomach sleepers and heavier people. (NapLab)
203 mattresses · 35 makers
Split king mattresses
Updated Oct 26, 2026 · 35 makers’ own size lists checked · findings from 20 independent testing sites · How we pick
A split king is two twin XL mattresses (38 × 80 each) side by side on a king bed. It’s made for split adjustable bases, so each person can raise their side on their own, and for couples who want a different firmness on each side.
We’ve gathered every split king mattress we could find into one list: 203 from 35 makers, in every size they come in.
How we check: Mattresses the maker sells as a split king (two twin XL halves, 38 × 80 inches each, so each side of a split adjustable base moves on its own) or a split California king (two 36 × 84 halves). Check whether the price is per half or for the pair.
In your size
Best picks, according to expert reviewers
From what independent reviewers found in their testing. Ordered by the evidence, not by commission.
Best for side sleepers
GhostBedLuxe Foam
Rated suitable for all positions up to 300 lb. (NapLab)
Best for back sleepers
AmerisleepAS2 Hybrid
Kept hips lifted; best for back sleepers needing support. (Mattress Nerd, NapLab, Sleepopolis)
Best for heavier people
NectarClassic Memory Foam
Suits heavier side sleepers. (RTINGS)
The bed and bedding to go with it
A split king needs a split base and sheets made for two halves.
All 203 split king mattresses
Each shows why it’s on this list. Best-reviewed first.
Sleep EZOrganic Latex Mattress (Select Sleep Organic) 2pc Split King (2 Twin XL), 2pc Split Cal King (2 x 36x84)Twin: from $1,349 saleSee price at sleepez.comDetails
Stearns & FosterLux Estate Split King, Split Cal KingTwin XL: $3,199See price at stearnsandfoster.comDetails
Tempur-PedicTEMPUR-LuxeBreeze Split King, Split Cal KingTwin XL: $5,399See price at tempurpedic.comDetails
PlushBedsSignature Bliss PillowTop Mattress Split KingTwin: from $1,774 saleSee price at plushbeds.comDetails
Brentwood HomeCrystal Cove Flippable Split KingTwin: $1,169 saleSee price at brentwoodhome.comDetails
BedgearM3 Performance Mattress Split King, Split Cal KingQueen: from $3,000See price at bedgear.comDetails
EssentiaStratami Organic Mattress Split King (2 Twin XL)Twin: from $3,599Get a quote at myessentia.comDetails
DreamCloudPressureSmart Plush Pillow Top Split KingTwin: $1,099See price at dreamcloudsleep.comDetails
PlushBedsRoyal Bliss Luxury Mattress Split KingTwin: from $4,699 saleSee price at plushbeds.comDetails
SealyPosturepedic Hybrid (Medina Hybrid II) Split King, Split Cal KingTwin: $699 saleSee price at sealy.comDetails
Tempur-PedicTEMPUR-ProBreeze Split King, Split Cal KingTwin XL: $3,999See price at tempurpedic.comDetails
Turmerry7 Zone Organic Latex Mattress Split King, Split Cal KingTwin: from $999See price at turmerry.comDetails
EssentiaClassic REM5 Active Organic Mattress Split King (2 Twin XL), Split Cal KingTwin: $4,099Get a quote at myessentia.comDetails
PlushBedsLuxury Bliss Hybrid Latex Mattress Split KingTwin: from $799 saleSee price at plushbeds.comDetails
AvocadoLuxury Organic Mattress Split KingTwin XL: from $3,999See price at avocadogreenmattress.comDetails
SealyPosturepedic Elite High Point II Split King, Split Cal KingTwin XL: $2,519See price at sealy.comDetails
SealyPosturepedic Spring (Medina II) Split King, Split Cal KingTwin: $599 saleSee price at sealy.comDetails
Stearns & FosterReserve Split King, Split Cal KingTwin XL: $4,799See price at stearnsandfoster.comDetails
Stearns & FosterStudio Split King, Split Cal KingTwin: $1,799See price at stearnsandfoster.comDetails
Tempur-PedicTEMPUR-ActiveBreeze Smart Bed Split King, Split Cal KingTwin XL: $9,898See price at tempurpedic.comDetails
Tempur-PedicTEMPUR-ProAdapt Split King, Split Cal KingTwin: $2,999See price at tempurpedic.comDetails
PlushBedsOrganic Bliss Pillowtop Organic Mattress Split King, Split Cal KingTwin: $2,424 saleSee price at plushbeds.comDetails
PlushBedsBotanical Bliss Organic Latex Mattress Split King, Split Cal KingTwin: $1,499 saleSee price at plushbeds.comDetails
Stearns & FosterEstate Split King, Split Cal KingTwin XL: $1,999See price at stearnsandfoster.comDetails
Tempur-PedicTEMPUR-LuxeAdapt Split King, Split Cal KingTwin XL: $4,399See price at tempurpedic.comDetails
PlushBedsNatural Bliss Natural Latex Mattress Split King, Split Cal KingTwin: from $1,599 saleSee price at plushbeds.comDetails
SealyPosturepedic Elite Albany II Split King, Split Cal KingTwin XL: from $1,719See price at sealy.comDetails
SealyPosturepedic Elite Brenham II Split King, Split Cal KingTwin XL: from $2,019See price at sealy.comDetails
DreamCloudPressureSmart Extra Firm Pillow Top Split KingTwin: $1,699See price at dreamcloudsleep.comDetails
BedgearM3 Night Ice Performance Mattress Split King, Split Cal KingQueen: from $3,500See price at bedgear.comDetails
BedgearM5 Night Ice Performance Mattress Split King, Split Cal KingQueen: from $4,500See price at bedgear.comDetails
BedgearM5 Performance Mattress Split King, Split Cal KingQueen: from $4,000See price at bedgear.comDetails
Rest Right Mattress10″ Kingship Comfort Classic Mattress Split California King (Includes Both Sides)Twin XL: $680 saleGet a quote at restrightmattress.comDetails
Rest Right Mattress10″ Kingship Comfort Flippable Elite 2 Mattress Split California King (Includes Both Sides)Narrow Twin (29" x 72"): $515 saleGet a quote at restrightmattress.comDetails
Rest Right Mattress10″ Kingship Comfort Restful Latex Mattress Split California King (Includes Both Sides)Twin: $995See price at restrightmattress.comDetails
Rest Right Mattress12″ Kingship Comfort Superior Mattress Split California King (Includes Both Sides)Twin: $850 saleSee price at restrightmattress.comDetails
Rest Right Mattress13″ Kingship Comfort Hybrid Mattress Split California King (Includes Both Sides)Twin: $865See price at restrightmattress.comDetails
Rest Right Mattress8″ Kingship Comfort Flippable Elite 1 Mattress Split California King (Includes Both Sides)Narrow Twin (29" x 72"): $480 saleGet a quote at restrightmattress.comDetails
Mattress InsiderAdventure Classic Split Cal King 36 × 84, Split Cal King 36 × 84Twin 38 × 75: $368 saleGet a quote at mattressinsider.comDetails
Mattress InsiderAdventure Plus Split Cal King 36 × 84, Split Cal King 36 × 84Twin 38 × 75: $519 saleGet a quote at mattressinsider.comDetails
CorsicanaBioPosture 12″ iSwitch Flippable Two-Sided Mattress CKS (2) – Split Cal King (two pieces)See price at corsicanamattress.comDetails
EssentiaDormeuse REM9 Active Organic Mattress Split King (2 Twin XL), Split Cal KingTwin: $7,299Get a quote at myessentia.comDetails
PlushBedsEco Bliss Hybrid Latex Mattress Split KingTwin: from $959 saleSee price at plushbeds.comDetails
EssentiaGrateful Eight Organic Latex Mattress Split King (2 Twin XL)Twin: $1,999Get a quote at myessentia.comDetails
PlushBedsHeavenly Plush Luxury Hybrid Mattress Split KingTwin: from $969 saleSee price at plushbeds.comDetails
EssentiaTatami Organic Mattress Split King (2 Twin XL), Split Cal KingTwin: $2,999Get a quote at myessentia.comDetails
Chattam & WellsThe Ashford Split Cal King, Split Cal KingQueen: $4,900See price at chattamandwells.comDetails
Chattam & WellsThe Buckingham Split Cal King, Split Cal KingQueen: $7,900See price at chattamandwells.comDetails
Chattam & WellsThe Chantilly Split Cal King, Split Cal KingQueen: $3,900See price at chattamandwells.comDetails
Chattam & WellsThe Kensington Split Cal King, Split Cal KingQueen: $5,900See price at chattamandwells.comDetails
Chattam & WellsThe Lismore Split Cal King, Split Cal KingQueen: $2,900See price at chattamandwells.comDetails
Chattam & WellsThe Miramare Split Cal King, Split Cal KingQueen: $3,300See price at chattamandwells.comDetails
Chattam & WellsThe Palermo Firm Split Cal King, Split Cal KingQueen: $6,000See price at chattamandwells.comDetails
Chattam & WellsThe Palermo Medium Split Cal King, Split Cal KingQueen: $6,000See price at chattamandwells.comDetails
Chattam & WellsThe Palermo Pillow-Top Split Cal King, Split Cal KingQueen: $6,000See price at chattamandwells.comDetails
Chattam & WellsThe Roma Split Cal King, Split Cal KingQueen: $7,000See price at chattamandwells.comDetails
Eco TerraThe Savvy Bliss Hybrid Mattress Split KingTwin: $999 saleSee price at ecoterrabeds.comDetails
Chattam & WellsThe St. Pierre Split Cal King, Split Cal KingQueen: $8,000See price at chattamandwells.comDetails
Chattam & WellsThe Windsor Split Cal King, Split Cal KingQueen: $6,900See price at chattamandwells.comDetails
EssentiaVenti Organic Latex Double Sided Mattress Split King (2 Twin XL)Get a quote at myessentia.comDetails
Texas Mattress Makers100% Foam Mattress Split KingTwin: $2,230Get a quote at texasmattressmakers.comDetails
Sleep EZ100% Natural Latex Mattress 2pc Split King (2 Twin XL), 2pc Split Cal King (2 x 36x84)Twin: from $1,099 saleSee price at sleepez.comDetails
Texas Mattress MakersEssential Mattress Split KingTwin: $699 saleGet a quote at texasmattressmakers.comDetails
Texas Mattress MakersEssential Plus Mattress Split KingTwin: $999 saleGet a quote at texasmattressmakers.comDetails
Texas Mattress MakersGuest Foam Mattress Split KingTwin: $299Get a quote at texasmattressmakers.comDetails
Texas Mattress MakersHotel Comfort Mattress Split KingTwin: $1,099 saleGet a quote at texasmattressmakers.comDetails
Texas Mattress MakersHybrid Plus Mattress Split KingTwin: $1,671 saleGet a quote at texasmattressmakers.comDetails
Texas Mattress MakersHybrid Plus Natural Mattress Split KingTwin: $2,599 saleGet a quote at texasmattressmakers.comDetails
RV Discount MattressJourneyRest Cool Hybrid 10″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
RV Discount MattressJourneyRest Cool Hybrid 12″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
RV Discount MattressJourneyRest Cool Hybrid 8″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
RV Discount MattressOpenRoads Cool 6″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
Texas Mattress MakersQuantum Mattress Split KingTwin: $3,999 saleGet a quote at texasmattressmakers.comDetails
Texas Mattress MakersQuantum Natural Mattress Split KingTwin: $5,370 saleGet a quote at texasmattressmakers.comDetails
RV Discount MattressRoadDreams Cool 10″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
RV Discount MattressRoadDreams Cool 8″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
Texas Mattress MakersTMM Value Mattress Split KingTwin: $299Get a quote at texasmattressmakers.comDetails
Texas Mattress MakersTMM Value Plus Mattress Split KingTwin: $399 saleGet a quote at texasmattressmakers.comDetails
RV Discount MattressTru Lux Cool 12″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
RV Discount MattressTru Lux Cool 12″ Hybrid Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
RV Discount MattressTru Lux Cool 14″ Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
RV Discount MattressTru Lux Cool 14″ Hybrid Split Cali King (36 × 84), Split Cali King (36 × 84)Get a quote at rvdiscountmattress.comDetails
Where to buy split king mattresss
Most are sold by their makers online. 35 makers below; each mattress links to the maker’s own page for your size.
Chattam & Wells12 mattressesDreamCloud12 mattressesGhostBed11 mattressesTexas Mattress Makers11 mattressesPurple10 mattressesRV Discount Mattress10 mattressesAmerisleep9 mattressesPlushBeds9 mattressesNectar8 mattressesBear7 mattressesCasper7 mattressesSaatva7 mattressesSealy7 mattressesTempur-Pedic7 mattressesBedgear6 mattressesEssentia6 mattressesNolah6 mattressesRest Right Mattress6 mattresses
Questions
What counts as a split king mattress here?
Mattresses the maker sells as a split king (two twin XL halves, 38 × 80 inches each, so each side of a split adjustable base moves on its own) or a split California king (two 36 × 84 halves). Check whether the price is per half or for the pair.
Which split king mattresses come in odd sizes?
29 in Bunk (36 × 84) (36 × 84), 14 in RV king (70 × 80) (70 × 80), 13 in RV king (72 × 80), 12 in Truck sleeper 42 × 80 (42 × 80), 12 in Short queen · 74-inch (60 × 74), 11 in RV bunk (30 × 80) (30 × 80). Each is sold in exactly those inches, from the maker’s own size list.
Where can I buy a split king mattress?
Mostly online from the maker: Chattam & Wells (12), DreamCloud (12), GhostBed (11), Texas Mattress Makers (11), Purple (10) and 30 more.