Sierra Sleep Millennium Hybrid Mattress
Best supportive hybrid for side sleepers seeking pressure relief.
A plush hybrid that prioritizes temperature regulation through advanced cooling materials like copper-infused foam and phase change layers. It balances soft, contouring comfort with the responsive support of a coil system, making it a solid choice for those who want a luxurious feel without overheating.
$1699.99
at
Mattress Direct
More Millennium options
Who it's for
- Side sleepers seeking a blend of softness and structural support
- Couples who need full use of the mattress surface area
- Hot sleepers looking for better airflow than traditional memory foam
Who should skip it
- Sleepers who prefer an ultra-plush, enveloping surface feel
- Light sleepers easily disturbed by a partner's movements
- Individuals sensitive to strong smells during the initial setup phase
Performance breakdown
Temperature Regulation
Copper infusion and phase change materials actively dissipate heat all night.
Motion Isolation
Individually wrapped coils effectively dampen movement for undisturbed partner sleep.
Pressure Relief
NanoCoil technology provides targeted contouring that cradles joints without sinking.
Edge Support
Hybrid construction offers decent stability, though softer edges may feel yielding.
Adjustable Base Compatibility
Flexible hybrid design pairs seamlessly with modern motorized bed frames.
Setup Convenience
Compressed shipping is convenient, but the heavy weight requires two people.
Key Specs
Size
King
Construction
Hybrid
Comfort Level
Plush
Thickness
15 inches
Width
75 inches
Length
79 inches
Weight
135 lbs
Top Style
Tight Top
Cooling Features
Gel latex, Copper-infused memory foam, Phase change material
Adjustable Base Compatible
Yes
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