Products
Nectar Premier Copper
Tempur-Pedic TEMPUR-Adapt
Tested using Methodology v1.0.1
Updated Oct 17, 2025 08:02 PM
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Nectar
Tested using Methodology v1.0.1
Updated Oct 15, 2025 04:24 PM
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Tempur-Pedic
Mattress Type
Foam
Bounciness Level
Very Low (2 cm)
Sinking Level
Moderate (5 cm)
Firmness Level
Medium-Plush (41 Pa/mm)
Contouring Level
Moderate (26 cm)
Mattress Type
Foam
Bounciness Level
Very Low (3 cm)
Sinking Level
Moderate (5 cm)
Firmness Level
Medium (48 Pa/mm)
Contouring Level
High (25 cm)
Our Verdict
Nectar Premier Copper
Tempur-Pedic TEMPUR-Adapt
The Nectar Premier Copper is a better option than the Tempur-Pedic TEMPUR-Adapt for most people. Both mattresses are all-foam options with very little bounce, but the Nectar is much more responsive, so it's easier to shift sleeping positions and doesn't make you feel constrained or stuck. The Nectar also has better edge support, so it's easier to get in and out of bed. That said, the Temper-Pedic keeps you cooler, though it's also not quite cooling enough for hot sleepers. It has better motion isolation as well, so if you're a very light sleeper, you may prefer it.
Variants
- Premier Copper (Queen)
- TEMPUR-Adapt (Queen (Medium))
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Queen
Premier Copper
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Nectar
Queen (Medium)
TEMPUR-Adapt
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Tempur-Pedic
Main Differences for
Sleeping (In Development)
Sleeping (In Development)
Threshold
Sleeping (In Development)
8.1
7.2
Edge Support
8.0
6.7
Cooling
7.3
7.7
Responsiveness
9.1
3.5
Full Comparison
Design
Style
Style Picture
Mattress Type
Foam
Foam
Bed-In-A-Box
Yes
No
Quilted Top Layer
No
No
Grab Handles
No
Yes
Thickness
34.4 cm (13.5")
27.3 cm (10.7")
Performance
Firmness
Head/Feet Firmness
Lumbar Firmness
Firmness Video
Normalized Stiffness @ Head/Feet
42 Pa/mm
49 Pa/mm
Normalized Stiffness @ Lumbar
41 Pa/mm
48 Pa/mm
Firmness Level
Medium-Plush (41 Pa/mm)
Medium (48 Pa/mm)
Bounciness
Bounciness Video
Maximum Rebound Height
2.0 cm (0.8")
3.0 cm (1.2")
Bounciness Level
Very Low (2 cm)
Very Low (3 cm)
Sinking & Contouring
Sinking & Contouring Picture
Sinking Depth
4.6 cm (1.8")
4.9 cm (1.9")
Diameter Of Distortion
26.0 cm (10.2")
25.4 cm (10.0")
Sinking Level
Moderate (5 cm)
Moderate (5 cm)
Contouring Level
Moderate (26 cm)
High (25 cm)
Responsiveness
9.1
3.5
Responsiveness Video
Response Time
0.5 s
3.9 s
Motion Isolation
8.6
9.4
Motion Isolation Video
Head/Feet Motion Isolation
Lumbar Motion Isolation
Peak Acceleration @ Head/Feet
0.56 g
0.57 g
Dissipation Time @ Head/Feet
0.22 s
0.22 s
Peak Acceleration @ Lumbar
3.10 g
1.74 g
Dissipation Time @ Lumbar
0.27 s
0.21 s
Edge Support
8.0
6.7
Naturalistic Loading Pad Video
Naturalistic Loading Pad
Small Platen
Naturalistic Loading Pad Indentation
144 mm
170 mm
Small Platen Indentation @ 0 mm From Edge
172 mm
171 mm
Small Platen Indentation @ 150 mm From Edge
154 mm
147 mm
Increased Indentation @ Mattress Edge
18 mm
24 mm
Cooling
7.3
7.7
Cooling Graph
Energy Transferred Over 1st Hour
59 kJ
62 kJ
Energy Transferred Over 8 Hours
147 kJ
159 kJ
Components
Cover
Cover Picture
Sleeping Surface Material
Polyester, Nylon, Polyethylene, Copper-Infused Polyester
Polyester, Polyethylene, Spandex
Removable
No
Yes
Machine Washable
No
No
Edge Construction
Edge Support Picture
Edge Component
None
None
Foam Layer Material
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
N/A
Memory Foam
Lower Comfort Foam @ Lumbar
N/A
Memory Foam
Transition Foam
Polyfoam
Polyfoam
Support Foam
Polyfoam
Polyfoam
Foam Layer Mass Density
6.2
6.2
Quilted Top Fill
N/A
N/A
Quilted Top Fill Foam Density vs. Reference
N/A
N/A
Upper Comfort Foam @ Head/Feet
36 kg/m³ (2.2 lb/cu.ft.)
39 kg/m³ (2.5 lb/cu.ft.)
Upper Comfort Foam @ Head/Feet Density vs. Reference
0.6
0.6
Upper Comfort Foam @ Lumbar
36 kg/m³ (2.2 lb/cu.ft.)
39 kg/m³ (2.5 lb/cu.ft.)
Upper Comfort Foam @ Lumbar Density vs. Reference
0.6
0.6
Lower Comfort Foam @ Head/Feet
N/A
51 kg/m³ (3.2 lb/cu.ft.)
Lower Comfort Foam @ Head/Feet Density vs. Reference
N/A
0.8
Lower Comfort Foam @ Lumbar
N/A
51 kg/m³ (3.2 lb/cu.ft.)
Lower Comfort Foam @ Lumbar Density vs. Reference
N/A
0.8
Transition Foam
27 kg/m³ (1.7 lb/cu.ft.)
27 kg/m³ (1.7 lb/cu.ft.)
Transition Foam Density vs. Reference
0.8
0.8
Support Foam
28 kg/m³ (1.7 lb/cu.ft.)
25 kg/m³ (1.5 lb/cu.ft.)
Support Foam Density vs Reference
0.9
0.8
Foam Layer Thickness
Foam Layer Thickness Picture
Quilted Top
N/A
N/A
Upper Comfort Foam @ Head/Feet
10.0 cm (3.9")
3.8 cm (1.5")
Upper Comfort Foam @ Lumbar
10.0 cm (3.9")
3.8 cm (1.5")
Lower Comfort Foam @ Head/Feet
N/A
3.8 cm (1.5")
Lower Comfort Foam @ Lumbar
N/A
3.8 cm (1.5")
Transition Foam
7.0 cm (2.8")
8.0 cm (3.1")
Support Foam
17.5 cm (6.9")
11.9 cm (4.7")
Spring Layer Dimensions
Spring Layer Height Picture
Spring Layer Density Picture
Comfort Layer Height
N/A
N/A
Comfort Layer Coil Density
N/A
N/A
Comfort Layer Coil Gauge
N/A
N/A
Support Layer Height
N/A
N/A
Support Layer Coil Density
N/A
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
Transition & Support Layer IPD
Quilted Top Fill 25% IPD
N/A
N/A
Upper Comfort Foam @ Head/Feet 25% IPD
1.9 kPa
1.6 kPa
Upper Comfort Foam @ Lumbar 25% IPD
1.9 kPa
1.6 kPa
Lower Comfort Foam @ Head/Feet 25% IPD
N/A
1.3 kPa
Lower Comfort Foam @ Lumbar 25% IPD
N/A
1.3 kPa
Transition Foam 25% IPD
2.6 kPa
3.5 kPa
Support Foam 25% IPD
5.0 kPa
6.1 kPa
Spring Layer Firmness
Comfort Layer Firmness
Support Layer Firmness
Spring Layer Firmness
Normalized Comfort Layer Stiffness @ Head/Feet
N/A
N/A
Normalized Comfort Layer Stiffness @ Lumbar
N/A
N/A
Normalized Support Layer Stiffness @ Head/Feet
N/A
N/A
Normalized Support Layer Stiffness @ Lumbar
N/A
N/A
Foam Layer Resilience
Foam Layer Resilience Video
Quilted Top Fill
N/A
N/A
Upper Comfort Foam @ Head/Feet
16%
4%
Upper Comfort Foam @ Lumbar
16%
4%
Lower Comfort Foam @ Head/Feet
N/A
2%
Lower Comfort Foam @ Lumbar
N/A
2%
Transition Foam
41%
48%
Support Foam
38%
36%
Spring Layer Bounciness
Comfort Spring Layer Bounciness Video
Support Spring Layer Bounciness Video
Comfort Spring Layer Maximum Rebound Height
N/A
N/A
Support Spring Layer Maximum Rebound Height
N/A
N/A
Check Price
Queen
Premier Copper
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Nectar
Queen (Medium)
TEMPUR-Adapt
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Tempur-Pedic
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Nectar Premier Copper
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Nectar Premier Copper vs Tempur-Pedic TEMPUR-Adapt: Main Discussion
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