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Sierra Sleep® By Ashley® Millennium Luxury Gel Memory Foam Cushion Firm California King Mattress in a Box

Model #: M50651
Sierra Sleep
At a Glance

When it comes to your comfort, discover the luxury of this California king gel memory foam mattress. A layer of cooling gel latex and two layers of temperature-regulating material keep you at a comfortable temperature all night long. Copper-infused memory foam contributes to the cooling performance, and a green tea-infused support foam base keeps your mattress fresh. Contouring comfort foam conforms to your body, delivering amazing support, pressure relief and comfort.

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$2,629.99Save $NaN

Get to know this product.

  • 2 layers of phase change material (PCM)
  • 2" copper-infused gel memory foam; 3" sculpted body-contouring comfort foam; green tea-infused support foam base
  • 4-way 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

Note: Purchasing mattress and foundation from two different brands may void warranty; see warranty for details

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


Misc. Specs

Height (in.)15
Made InUSA
Mattress SizeCalifornia King
Width (in.)71
Weight Kilogram298
Length (in.)83
Double Sided MattressNo
Manufacturer Warranty10 Year
Age GroupAdult
Color Finish NameWhite
Mattress Comfort LevelFirm
Shipping Width (in.)15
Shipping Height (in.)80
Shipping Depth (in.)15
Height (cm)38
Width (cm)180
Length (cm)211
Shipping Width (cm)38
Shipping Height (cm)203
Shipping Depth (cm)38
Mattress ConstructionGel Memory Foam