The California King is the longest standard mattress size — 72" wide by 84" long. It's the go-to for taller sleepers, larger master bedrooms, and anyone who wants maximum legroom. But it's also a major purchase, and the wrong pick can leave you with pressure points, overheating, or a mattress that doesn't hold up.
This guide covers what makes a California King different, what to look for, and honest picks from LA Mattress Store's lineup.
| Size | Width | Length | Best For |
|---|---|---|---|
| Standard King | 76" | 80" | Couples who want width; most room sizes |
| California King | 72" | 84" | Taller sleepers (6'2"+); narrower rooms |
California Kings are 4 inches longer and 4 inches narrower than standard Kings. They work best in rooms with more length than width, or for sleepers who tend to overhang a standard mattress. For a deeper comparison, see our California King vs. King guide.
Your sleeping position should drive this decision:
At this size and price point, material quality matters more than ever:
California Kings are popular with larger-framed sleepers, who tend to sleep warmer. Prioritize materials with built-in cooling: copper-infused latex, gel memory foam, Tencel covers, or pocketed coil systems with open airflow.
For couples, look for individually wrapped (pocketed) coils or memory foam — both absorb movement better than traditional innerspring systems.
If you're pairing with an adjustable base, make sure the mattress is rated for it. Memory foam, latex, and most quality hybrids flex well. Traditional innerspring does not.
Best for: Back and side sleepers who want natural materials and long-term value.
The Lois combines GOTS-certified organic cotton with natural latex and individually wrapped coils. It's CertiPUR-US certified, adjustable base compatible, and backed by a 20-year warranty. The medium feel works for most sleep positions.
| Pros | Cons |
|---|---|
| Organic, non-toxic materials | Premium price point |
| Excellent durability (latex lasts 15+ years) | Medium feel won't suit those who prefer firm or plush extremes |
| Great motion isolation |
Best for: Couples; side and back sleepers who want premium pressure relief.
Tempur-Pedic's TEMPUR material is one of the most body-adaptive foams available. The hybrid version adds a coil support layer for more bounce and airflow than all-foam options. Excellent motion isolation makes it a strong couple's mattress.
| Pros | Cons |
|---|---|
| Industry-leading body contouring | High price point |
| Outstanding for couples (minimal disturbance) | Medium feel only — no firm variant in this line |
| Well-established brand with strong warranty support |
Best for: Back and stomach sleepers; those who run warm.
This hybrid combines pressure-regulating gel memory foam with a Tencel cooling cover and 14.5-gauge encased coils. The firm feel keeps the spine aligned for back and stomach sleepers, while the gel foam and Tencel cover address heat retention.
| Pros | Cons |
|---|---|
| Strong cooling properties | Firm feel — not suited for side sleepers |
| Excellent edge support | Less pressure relief at shoulder than softer options |
| Good for heavier-framed sleepers |
Best for: Back and side sleepers who want a trusted mid-range hybrid.
Sealy's Kelburn II pairs their Immersion Advanced Memory Foam with Chill technology and a coil support system. The UltraStretch cover and moisture-wicking technology add comfort and freshness over time.
| Pros | Cons |
|---|---|
| Reliable brand with national service network | Medium only — limited firmness options |
| Good cooling for a hybrid | Less distinctive feel than premium options |
Best for: Back and stomach sleepers who want a luxury firm with natural materials and cooling.
The Beckford features a Polar Touch Cooling Cover, 100% Natural Copper Talalay Latex, and 1,130 fabric-wrapped coils. Made in the USA, CertiPUR and Oeko-Tex certified. Pairs well with adjustable bases.
| Pros | Cons |
|---|---|
| Exceptional cooling technology | Luxury firm — not suited for side sleepers who need pressure relief |
| Natural materials + domestic manufacturing | Premium price |
| Strong edge support and durability |
Best for: Buyers who want a handcrafted luxury mattress with a plush feel.
The Kensington is a premium handcrafted mattress featuring a Royal Silken Damask cover with cashmere, natural Talalay latex comfort layers, and dual-layer comfort coils. It's an investment piece — built to last and feel exceptional.
| Pros | Cons |
|---|---|
| Exceptional luxury feel and materials | Very high price point |
| Edge-to-edge sleeping surface | Plush — not ideal for firm preference |
| Excellent long-term durability |
| Sleep Style | Recommended Pick | Why |
|---|---|---|
| Side sleeper | Diamond Lois Hybrid or Tempur-Adapt Hybrid | Pressure relief at shoulder/hip |
| Back sleeper | Sealy Kelburn II or Eastman Royal Sands | Firm support for lumbar alignment |
| Stomach sleeper | Englander Beckford or Eastman Royal Sands | Firm surface prevents hip sink |
| Couples (mixed preferences) | Tempur-Adapt or Diamond Lois | Motion isolation + medium feel |
| Hot sleepers | Englander Beckford or Eastman Royal Sands | Best cooling tech |
| Eco-conscious buyers | Diamond Lois or Harvest Green Latex | Organic/natural certifications |
A California King is 72" wide × 84" long — 4 inches longer and 4 inches narrower than a standard King. It's the best option for taller sleepers (especially those over 6'2") and rooms with more length than width.
If you're tall, if you have a room that's longer than it is wide, or if you just want maximum legroom — yes. If you're buying for a couple and neither is unusually tall, a standard King may give you more usable surface area side-by-side.
Generally yes — about 10–20% more than the same mattress in a standard King, depending on the brand. Bedding (sheets, comforters) for Cal King is also slightly more specialized.
Memory foam, latex, and most quality hybrids are adjustable base compatible. Traditional innerspring mattresses are not. Always confirm compatibility before purchasing.
No — California Kings require specifically-sized sheets and mattress protectors. Standard King bedding won't fit correctly.
Rotate head-to-foot every 6 months (unless the manufacturer says otherwise). Use a waterproof mattress protector. Follow the brand's specific cleaning guidelines for spills or stains.
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Ready to try California King mattresses in person? Visit any of our 5 LA locations — our team can walk you through firmness options based on your sleep style and room dimensions. All mattresses come with our 120-night comfort guarantee.
Browse our full California King mattress collection or learn more about California King vs. King sizing.
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