"A happy couple enjoys the comfort of a spacious California King mattress, designed for taller individuals or those who share their bed with pets, while a Serta sheep lounges playfully, adding a fun touch to the scene.

California King Mattresses

Slightly narrower but longer in length than a King. Cal King mattresses offer the best in comfort especially for taller people, people who share the foot of their bed with a pet or have a narrow bedroom.

2 products

Mattress size guide

  • Outline icon of a twin bed

    Twin

    74.5" L x 38" W

    Best for kids and limited sleeping space.

    twin 
  • Outline icon of a twin XL bed

    Twin XL

    79.5" L x 39" W

    Best for college students, single adults living in a small space and those with a split king adjustable bed frame.

    twin xl 
  • Outline icon of a full size bed

    Full

    74.5" L x 54" W

    Best for growing kids, young adults, couples who don't need a lot of space to move around and guest bedrooms.

    full 
  • Outline icon of a queen bed

    Queen

    79.5" L x 60" W

    Best for couples and single sleepers who like space to roll around.

    queen 
  • Outline icon of a king bed

    King

    79.5" L x 76" W

    Best for couples who like their own space to spread out and parents who co-sleep with children and room for pets.

    king 
  • Outline icon of a cal king bed

    Cal King

    83.5" long x 72" wide

    Best for those with longer legs and parents who co-sleep with children and room for pets.

    cal king 
A man and his wife lay on a blue and white Serta iComfort mattress in their modern bedroom. The man is cuddling his orange cat while his wife reads a book.

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    120-day trial

    If you’re not completely satisfied, you can exchange or return it for a refund.

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    Free shipping and returns

    All products ship free and feature free returns when you order directly from Serta.com.

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  • Serta sheep holding up a sign with a bed on it to indicate Serta's white glove delivery.

    Free white glove delivery

    Hand delivered and setup in the bedroom of your choice. Plus removal of your old mattress.

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  • Serta sheep holding up a sign with a warranty paper on it to indicate Serta's 10-year mattress warranty.

    10-year limited warranty

    You should be able to rely on the quality of your rest. That’s why every Serta® bed is backed by our hassle free warranty.

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    Monthly financing with Affirm

    Quick, simple financing options with Affirm. Apply at checkout.

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