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Sierra Sleep® By Ashley 10" Memory Foam Medium California King Mattress in a Box

Model #: M59251
Sierra Sleep
At a Glance

When it comes to your comfort, discover this 10-inch mattress. Its thick layer of memory foam conforms to your body, delivering amazing support, pressure relief and comfort. The memory foam layer is paired with a super-thick layer of firm support foam, which helps reduce motion transfer so you and your partner can enjoy an undisturbed sleep. This mattress arrives in a box for easy setup. Foundation/box spring available, sold separately.

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$919.99Save $NaN

Get to know this product.


  • 1.5" memory foam
  • 2" transition foam
  • 6.5" firm support foam
  • Stretch knit cover
  • Adjustable base compatible
  • Foundation/box spring sold separately
  • Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening

*Mattress only, all other products sold separately. Images may not depict actual size.


Misc. Specs

Product Weight (lbs.)63.96
Height (in.)10
Mattress SizeCalifornia King
Width (in.)72.05
Weight Kilogram156
Length (in.)83.46
Double Sided MattressNo
Manufacturer Warranty10 Year
Age GroupAdult
Color Finish NameWhite
Mattress Comfort LevelMedium
Shipping Width (in.)12.6
Shipping Height (in.)74.8
Shipping Depth (in.)12.6
Height (cm)25
Width (cm)183
Product Weight (kg)141
Length (cm)212
Shipping Width (cm)32
Shipping Height (cm)190
Shipping Depth (cm)32
Mattress ConstructionMemory Foam