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  1. Home
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Tempur-Pedic TEMPUR-Adapt vs SweetNight CoolNest Ultra

Which Mattress Is Better?

    Top
    Main Differences
    Design
      Style
    Performance
      FirmnessBody ConformitySupportBouncinessComfort Layers EnvelopmentResponsivenessMotion IsolationEdge SupportCooling
    Components
      CoverEdge ConstructionFoam Layer MaterialFoam Layer Mass DensityFoam Layer ThicknessSpring Layer DimensionsFoam Layer FirmnessSpring Layer FirmnessFoam Layer ResilienceSpring Layer Bounciness
    Comments

Products

Tempur-Pedic TEMPUR-Adapt
SweetNight CoolNest Ultra

Tested using Methodology v1.2

Updated Jul 27, 2026 05:27 PM

SEE PRICE
Tempur-Pedic

Tested using Methodology v1.2

Updated Sep 17, 2026 02:59 PM

SEE PRICE
Amazon
Tempur-Pedic TEMPUR-Adapt Picture

Track

SweetNight CoolNest Ultra Picture

Track

Mattress Type
Foam
Bed-In-A-Box
No
Upper Comfort Foam @ LumbarMemory Foam
Firmness Level
Medium (48 Pa/mm)
Mattress Type
Foam
Bed-In-A-Box
Yes
Upper Comfort Foam @ LumbarMemory Foam
Firmness Level
Medium (47 Pa/mm)
  1. Recommended in 2 articles:
  2. Memory Foam
  3. Brands

Our Verdict

Tempur-Pedic TEMPUR-Adapt

SweetNight CoolNest Ultra

The Tempur-Pedic TEMPUR-Adapt and the SweetNight CoolNest Ultra have different strengths. The SweetNight offers better support for heavier people, making it more suitable for combination and back/stomach sleepers in that category. It also offers better edge support, so sleeping or sitting on the side of the bed is more comfortable. Both mattresses have low responsiveness and a hugging feel, but it's more pronounced with the Tempur-Pedic. The Tempur-Pedic also offers better motion dissipation, so you might prefer it if you sleep lightly. 

GIFT THIS COMPARISON

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Variants

  • TEMPUR-Adapt (Medium) (California King)
  • TEMPUR-Adapt (Medium) (Full)
  • CoolNest Ultra (16") (King)
  • CoolNest Ultra (16") (Queen)

Review

See Tempur-Pedic TEMPUR-Adapt Review
See SweetNight CoolNest Ultra Review
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0 

Check Price

California King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Full
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
King
CoolNest Ultra (16")
SEE PRICE
Amazon
Queen
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
Queen
CoolNest Ultra (16")
SEE PRICE
Amazon
Split California King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Split King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Twin
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Twin Long
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 

Main Differences for
Side Sleeping

Threshold 

0.10

Side Sleeping 
 

7.7
7.6
No major differences between these mattresses for side sleeping. See full list of tests below.

Full Comparison

Design

Style 
 

Style Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Style Picture
Compare High-Res
SweetNight CoolNest Ultra Style Picture

Mattress Type 
 

Foam
Foam

Bed-In-A-Box 
 

No
Yes

Quilted Top Layer 
 

No
No

Grab Handles 
 

Yes
No

Thickness  

27.3 cm (10.7")
39.8 cm (15.7")
Performance

Firmness 
 

Head/Feet Firmness  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Head/Feet Firmness
 Preview Graph
SweetNight CoolNest Ultra Head/Feet Firmness
 Compare in Graph Tool

Lumbar Firmness  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Lumbar Firmness
 Preview Graph
SweetNight CoolNest Ultra Lumbar Firmness
 Compare in Graph Tool

Firmness Video  

Normalized Stiffness @ Head/Feet 
 

49 Pa/mm
45 Pa/mm

Normalized Stiffness @ Lumbar 
 

48 Pa/mm
47 Pa/mm

Firmness Level 
 

Medium (48 Pa/mm)
Medium (47 Pa/mm)

Body Conformity 
 

7.6
7.5

Shoulder Indentation vs. Body Weight  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Shoulder Indentation vs. Body Weight
 Preview Graph
SweetNight CoolNest Ultra Shoulder Indentation vs. Body Weight
 Compare in Graph Tool

Body Conformity Picture 1  

SweetNight CoolNest Ultra Body Conformity Picture 1

Body Conformity Picture 2  

SweetNight CoolNest Ultra Body Conformity Picture 2

Indent @ 50 kg (110 lb) 
 

49 mm (1.9")
46 mm (1.8")

Indent @ 80 kg (176 lb) 
 

68 mm (2.7")
70 mm (2.8")

Indent @ 110 kg (242 lb) 
 

86 mm (3.4")
88 mm (3.4")

Support 
 

7.2
7.1

Pelvis Indentation vs. Body Weight  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Pelvis Indentation vs. Body Weight
 Preview Graph
SweetNight CoolNest Ultra Pelvis Indentation vs. Body Weight
 Compare in Graph Tool

Indent Difference @ 50 kg (110 lb) 
 

18 mm (0.7")
18 mm (0.7")

Indent Difference @ 80 kg (176 lb) 
 

18 mm (0.7")
22 mm (0.9")

Indent Difference @ 110 kg (242 lb) 
 

23 mm (0.9")
22 mm (0.9")

Bounciness 
 

3.2
4.8

Bounciness Video  

Maximum Rebound Height 
 

3.0 cm (1.2")
5.0 cm (2.0")

Comfort Layers Envelopment 
 

8.2
7.9

Sinking & Contouring Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Sinking & Contouring Picture
Compare High-Res
SweetNight CoolNest Ultra Sinking & Contouring Picture

Sinking Depth 
 

4.9 cm (1.9")
4.6 cm (1.8")

Diameter Of Distortion 
 

25.4 cm (10.0")
25.5 cm (10.0")

Responsiveness 
 

3.5
5.6

Responsiveness Video  

Response Time 
 

3.9 s
2.3 s

Motion Isolation 
 

9.4
8.9

Motion Isolation Video  

Head/Feet Motion Isolation  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Head/Feet Motion Isolation
 Preview Graph
SweetNight CoolNest Ultra Head/Feet Motion Isolation
 Compare in Graph Tool

Lumbar Motion Isolation  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Lumbar Motion Isolation
 Preview Graph
SweetNight CoolNest Ultra Lumbar Motion Isolation
 Compare in Graph Tool

Peak Acceleration @ Head/Feet 
 

0.57 g
0.55 g

Dissipation Time @ Head/Feet 
 

0.22 s
0.35 s

Peak Acceleration @ Lumbar 
 

1.74 g
2.35 g

Dissipation Time @ Lumbar 
 

0.21 s
0.27 s

Edge Support 
 

6.7
7.1

Naturalistic Loading Pad Video  

Naturalistic Loading Pad  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Naturalistic Loading Pad
 Preview Graph
SweetNight CoolNest Ultra Naturalistic Loading Pad
 Compare in Graph Tool

Small Platen  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Small Platen
 Preview Graph
SweetNight CoolNest Ultra Small Platen
 Compare in Graph Tool

Naturalistic Loading Pad Indentation 
 

170 mm
158 mm

Small Platen Indentation @ 0 mm From Edge 
 

171 mm
166 mm

Small Platen Indentation @ 150 mm From Edge 
 

147 mm
143 mm

Increased Indentation @ Mattress Edge 
 

24 mm
23 mm

Cooling 
 

7.7
7.8

Cooling Graph  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Cooling Graph
 Preview Graph
SweetNight CoolNest Ultra Cooling Graph
 Compare in Graph Tool

Energy Transferred Over 1st Hour 
 

62 kJ
68 kJ

Energy Transferred Over 8 Hours 
 

159 kJ
157 kJ
Components

Cover 
 

Cover Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Cover Picture
Compare High-Res
SweetNight CoolNest Ultra Cover Picture

Sleeping Surface Material 
 

Polyester, Polyethylene, Spandex
Polyester

Removable 
 

Yes
Yes

Machine Washable 
 

No
No

Edge Construction 
 

Edge Support Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Edge Support Picture
Compare High-Res
SweetNight CoolNest Ultra Edge Support Picture

Edge Component 
 

None
None

Foam Layer Material 
 

Foam Layer Material Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Foam Layer Material Picture
Compare High-Res
SweetNight CoolNest Ultra Foam Layer Material Picture

Quilted Top Fill  

N/A
N/A

Upper Comfort Foam @ Head/Feet  

Memory Foam
Memory Foam

Upper Comfort Foam @ Lumbar  

Memory Foam
Memory Foam

Lower Comfort Foam @ Head/Feet  

Memory Foam
Memory Foam

Lower Comfort Foam @ Lumbar  

Memory Foam
Memory Foam

Transition Foam  

Polyfoam
Polyfoam

Support Foam  

Polyfoam
Polyfoam

Foam Layer Mass Density 
 

6.2
6.0

Quilted Top Fill  

N/A
N/A

Quilted Top Fill Foam Density vs. Reference 
 

N/A
N/A

Upper Comfort Foam @ Head/Feet  

39 kg/m³ (2.5 lb/cu.ft.)
54 kg/m³ (3.4 lb/cu.ft.)

Upper Comfort Foam @ Head/Feet Density vs. Reference 
 

0.6
0.8

Upper Comfort Foam @ Lumbar  

39 kg/m³ (2.5 lb/cu.ft.)
54 kg/m³ (3.4 lb/cu.ft.)

Upper Comfort Foam @ Lumbar Density vs. Reference 
 

0.6
0.8

Lower Comfort Foam @ Head/Feet  

51 kg/m³ (3.2 lb/cu.ft.)
48 kg/m³ (3.0 lb/cu.ft.)

Lower Comfort Foam @ Head/Feet Density vs. Reference 
 

0.8
0.8

Lower Comfort Foam @ Lumbar  

51 kg/m³ (3.2 lb/cu.ft.)
48 kg/m³ (3.0 lb/cu.ft.)

Lower Comfort Foam @ Lumbar Density vs. Reference 
 

0.8
0.8

Transition Foam  

27 kg/m³ (1.7 lb/cu.ft.)
33 kg/m³ (2.1 lb/cu.ft.)

Transition Foam Density vs. Reference 
 

0.8
0.5

Support Foam  

25 kg/m³ (1.5 lb/cu.ft.)
30 kg/m³ (1.9 lb/cu.ft.)

Support Foam Density vs Reference 
 

0.8
1.0

Foam Layer Thickness 
 

Foam Layer Thickness Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Foam Layer Thickness Picture
Compare High-Res
SweetNight CoolNest Ultra Foam Layer Thickness Picture

Quilted Top 
 

N/A
N/A

Upper Comfort Foam @ Head/Feet  

3.8 cm (1.5")
2.5 cm (1.0")

Upper Comfort Foam @ Lumbar  

3.8 cm (1.5")
2.5 cm (1.0")

Lower Comfort Foam @ Head/Feet  

3.8 cm (1.5")
1.0 cm (0.4")

Lower Comfort Foam @ Lumbar  

3.8 cm (1.5")
1.0 cm (0.4")

Transition Foam  

8.0 cm (3.1")
6.5 cm (2.6")

Support Foam  

11.9 cm (4.7")
28.0 cm (11.0")

Spring Layer Dimensions 
 

Spring Layer Height Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Spring Layer Height Picture
Compare High-Res
SweetNight CoolNest Ultra Spring Layer Height Picture

Spring Layer Density Picture 
 

Compare High-Res
Tempur-Pedic TEMPUR-Adapt Spring Layer Density Picture
Compare High-Res
SweetNight CoolNest Ultra Spring Layer Density Picture

Comfort Layer Height 
 

N/A
N/A

Comfort Layer Coil Density 
 

N/A

Comfort Layer Coil Gauge 
 

N/A
N/A

Support Layer Height 
 

N/A
N/A

Support Layer Coil Density 
 

N/A

Support Layer Coil Gauge @ Head/Feet 
 

N/A
N/A

Support Layer Coil Gauge @ Lumbar 
 

N/A
N/A

Foam Layer Firmness 
 

Comfort Layer IPD  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Comfort Layer IPD
 Compare in Graph Tool

Transition & Support Layer IPD  

 Preview Graph
Tempur-Pedic TEMPUR-Adapt Transition & Support Layer IPD
 Compare in Graph Tool

Quilted Top Fill 25% IPD 
 

N/A

Upper Comfort Foam @ Head/Feet 25% IPD 
 

1.6 kPa

Upper Comfort Foam @ Lumbar 25% IPD 
 

1.6 kPa

Lower Comfort Foam @ Head/Feet 25% IPD 
 

1.3 kPa

Lower Comfort Foam @ Lumbar 25% IPD 
 

1.3 kPa

Transition Foam 25% IPD 
 

3.5 kPa

Support Foam 25% IPD 
 

6.1 kPa

Spring Layer Firmness 
 

Comfort Layer Firmness  

Tempur-Pedic TEMPUR-Adapt Comfort Layer Firmness
 Compare in Graph Tool

Support Layer Firmness  

Tempur-Pedic TEMPUR-Adapt Support Layer Firmness
 Compare in Graph Tool

Spring Layer Firmness  

Normalized Comfort Layer Stiffness @ Head/Feet 
 

N/A

Normalized Comfort Layer Stiffness @ Lumbar 
 

N/A

Normalized Support Layer Stiffness @ Head/Feet 
 

N/A

Normalized Support Layer Stiffness @ Lumbar 
 

N/A

Foam Layer Resilience 
 

Foam Layer Resilience Video  

Quilted Top Fill  

N/A
N/A

Upper Comfort Foam @ Head/Feet  

4%
11%

Upper Comfort Foam @ Lumbar  

4%
11%

Lower Comfort Foam @ Head/Feet  

2%
7%

Lower Comfort Foam @ Lumbar  

2%
7%

Transition Foam  

48%
4%

Support Foam  

36%
38%

Spring Layer Bounciness 
 

Comfort Spring Layer Bounciness Video  

Support Spring Layer Bounciness Video  

Comfort Spring Layer Maximum Rebound Height 
 

N/A

Support Spring Layer Maximum Rebound Height 
 

N/A

Check Price

California King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Full
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
King
CoolNest Ultra (16")
SEE PRICE
Amazon
Queen
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
Queen
CoolNest Ultra (16")
SEE PRICE
Amazon
Split California King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Split King
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Twin
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Twin Long
TEMPUR-Adapt (Medium)
SEE PRICE
Tempur-Pedic
 
Back to Top

Tempur-Pedic TEMPUR-Adapt

SweetNight CoolNest Ultra

Comments

  1. Comparison
 • Posted 2 days ago

Tempur-Pedic TEMPUR-Adapt vs SweetNight CoolNest Ultra: Main Discussion

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