Products
Sealy Posturepedic Plus Mount Auburn
Novaform ComfortGrande Plus
Tested using Methodology v1.0.1
Updated Dec 02, 2025 06:47 PM
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Tested using Methodology v1.1
Updated Jan 28, 2026 01:49 AM
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Mattress Type
Hybrid
Bounciness Level
Moderate (14 cm)
Upper Comfort Foam @ LumbarN/A
Sinking Level
Moderate (5 cm)
Firmness Level
Medium-Firm (56 Pa/mm)
Contouring Level
Low (30 cm)
Mattress Type
Foam
Upper Comfort Foam @ LumbarMemory Foam
Firmness Level
Medium-Firm (52 Pa/mm)
Our Verdict
Sealy Posturepedic Plus Mount Auburn
Novaform ComfortGrande Plus
The Novaform ComfortGrande Plus and the Sealy Posturepedic Plus Mount Auburn have different strengths. They're both medium-firm and have somewhat low responsiveness, which creates a slow-moving feel. The Novaform is an all-foam mattress with very little bounce, making it more difficult to move around on, but it offers fantastic motion isolation, which may make it a preferred choice for light sleepers. The Sealy is bouncier, allowing you to change sleeping positions more easily, and it offers significantly better edge support, which is ideal if you want to maximize the comfortable sleeping surface or need solid sides to facilitate getting in and out of bed.
Variants
- Posturepedic Plus Mount Auburn (Queen)
- ComfortGrande Plus (Queen)
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Queen
Posturepedic Plus Mount Auburn
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ComfortGrande Plus
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Main Differences for
Sleeping (In Development)
Sleeping (In Development)
Threshold
Sleeping (In Development)
8.1
Full Comparison
Design
Style
Style Picture
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Mattress Type
Hybrid
Foam
Bed-In-A-Box
No
Yes
Quilted Top Layer
Yes
No
Grab Handles
Yes
Yes
Thickness
33.8 cm (13.3")
34.9 cm (13.7")
Performance
Firmness
Head/Feet Firmness
Preview Graph
Preview Graph
Lumbar Firmness
Preview Graph
Preview Graph
Firmness Video
Normalized Stiffness @ Head/Feet
61 Pa/mm
52 Pa/mm
Normalized Stiffness @ Lumbar
56 Pa/mm
52 Pa/mm
Firmness Level
Medium-Firm (56 Pa/mm)
Medium-Firm (52 Pa/mm)
Body Conformity
6.8
Shoulder Indentation vs. Body Weight
Preview Graph
Indent @ 50 kg (110 lb)
40 mm (1.6")
Indent @ 80 kg (172 lb)
60 mm (2.4")
Indent @ 110 kg (242 lb)
75 mm (3.0")
Support
7.3
Pelvis Indentation vs. Body Weight
Preview Graph
Indent Difference @ 50 kg (110 lb)
16 mm (0.6")
Indent Difference @ 80 kg (172 lb)
21 mm (0.8")
Indent Difference @ 110 kg (242 lb)
21 mm (0.8")
Bounciness
0.0
4.2
Bounciness Video
Maximum Rebound Height
14.5 cm (5.7")
4.0 cm (1.6")
Bounciness Level
Moderate (14 cm)
Comfort Layers Envelopment
0.0
7.3
Sinking & Contouring Picture
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Sinking Depth
5.2 cm (2.0")
4.8 cm (1.9")
Diameter Of Distortion
29.7 cm (11.7")
28.3 cm (11.1")
Sinking Level
Moderate (5 cm)
Contouring Level
Low (30 cm)
Responsiveness
6.9
6.9
Responsiveness Video
Response Time
1.4 s
1.4 s
Motion Isolation
7.7
9.2
Motion Isolation Video
Head/Feet Motion Isolation
Preview Graph
Preview Graph
Lumbar Motion Isolation
Preview Graph
Preview Graph
Peak Acceleration @ Head/Feet
2.59 g
0.58 g
Dissipation Time @ Head/Feet
0.44 s
0.25 s
Peak Acceleration @ Lumbar
3.47 g
1.97 g
Dissipation Time @ Lumbar
0.40 s
0.23 s
Edge Support
9.9
7.4
Naturalistic Loading Pad Video
Naturalistic Loading Pad
Preview Graph
Preview Graph
Small Platen
Preview Graph
Preview Graph
Naturalistic Loading Pad Indentation
105 mm
139 mm
Small Platen Indentation @ 0 mm From Edge
117 mm
157 mm
Small Platen Indentation @ 150 mm From Edge
113 mm
129 mm
Increased Indentation @ Mattress Edge
4 mm
29 mm
Cooling
7.6
7.7
Cooling Graph
Preview Graph
Preview Graph
Energy Transferred Over 1st Hour
58 kJ
64 kJ
Energy Transferred Over 8 Hours
160 kJ
157 kJ
Components
Cover
Cover Picture
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Sleeping Surface Material
Not Provided by Manufacturer
Polyester, Nylon, Polyethylene, Spandex
Removable
No
No
Machine Washable
No
No
Edge Construction
Edge Support Picture
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Edge Component
Pocket Coils
None
Foam Layer Material
Foam Layer Material Picture
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Quilted Top Fill
Memory Foam + Polyfoam + Fiber Fill
N/A
Upper Comfort Foam @ Head/Feet
N/A
Memory Foam
Upper Comfort Foam @ Lumbar
N/A
Memory Foam
Lower Comfort Foam @ Head/Feet
N/A
N/A
Lower Comfort Foam @ Lumbar
N/A
N/A
Transition Foam
Polyfoam
Polyfoam
Support Foam
N/A
Polyfoam
Foam Layer Mass Density
5.3
6.9
Quilted Top Fill
39 kg/m³ (2.4 lb/cu.ft.)
N/A
Quilted Top Fill Foam Density vs. Reference
0.6
N/A
Upper Comfort Foam @ Head/Feet
N/A
50 kg/m³ (3.1 lb/cu.ft.)
Upper Comfort Foam @ Head/Feet Density vs. Reference
N/A
0.8
Upper Comfort Foam @ Lumbar
N/A
50 kg/m³ (3.1 lb/cu.ft.)
Upper Comfort Foam @ Lumbar Density vs. Reference
N/A
0.8
Lower Comfort Foam @ Head/Feet
N/A
N/A
Lower Comfort Foam @ Head/Feet Density vs. Reference
N/A
N/A
Lower Comfort Foam @ Lumbar
N/A
N/A
Lower Comfort Foam @ Lumbar Density vs. Reference
N/A
N/A
Transition Foam
24 kg/m³ (1.5 lb/cu.ft.)
36 kg/m³ (2.3 lb/cu.ft.)
Transition Foam Density vs. Reference
0.6
1.4
Support Foam
N/A
28 kg/m³ (1.8 lb/cu.ft.)
Support Foam Density vs Reference
N/A
0.9
Foam Layer Thickness
Foam Layer Thickness Picture
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Quilted Top
7.7 cm (3.0")
N/A
Upper Comfort Foam @ Head/Feet
N/A
7.5 cm (3.0")
Upper Comfort Foam @ Lumbar
N/A
7.5 cm (3.0")
Lower Comfort Foam @ Head/Feet
N/A
N/A
Lower Comfort Foam @ Lumbar
N/A
N/A
Transition Foam
4.8 cm (1.9")
7.0 cm (2.8")
Support Foam
N/A
21.0 cm (8.3")
Spring Layer Dimensions
Spring Layer Height Picture
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Spring Layer Density Picture
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Compare High-Res
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
21.0 cm (8.3")
N/A
Support Layer Coil Density
297 coils/m² (28 coils/ft²)
N/A
Support Layer Coil Gauge @ Head/Feet
15 gauge
N/A
Support Layer Coil Gauge @ Lumbar
15 gauge
N/A
Foam Layer Firmness
Comfort Layer IPD
Preview Graph
Preview Graph
Transition & Support Layer IPD
Preview Graph
Preview Graph
Quilted Top Fill 25% IPD
1.3 kPa
N/A
Upper Comfort Foam @ Head/Feet 25% IPD
N/A
2.0 kPa
Upper Comfort Foam @ Lumbar 25% IPD
N/A
2.0 kPa
Lower Comfort Foam @ Head/Feet 25% IPD
N/A
N/A
Lower Comfort Foam @ Lumbar 25% IPD
N/A
N/A
Transition Foam 25% IPD
6.6 kPa
3.0 kPa
Support Foam 25% IPD
N/A
4.1 kPa
Spring Layer Firmness
Comfort Layer Firmness
Support Layer Firmness
Preview Graph
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
61 Pa/mm
N/A
Normalized Support Layer Stiffness @ Lumbar
63 Pa/mm
N/A
Foam Layer Resilience
Foam Layer Resilience Video
Quilted Top Fill
7%
N/A
Upper Comfort Foam @ Head/Feet
N/A
4%
Upper Comfort Foam @ Lumbar
N/A
4%
Lower Comfort Foam @ Head/Feet
N/A
N/A
Lower Comfort Foam @ Lumbar
N/A
N/A
Transition Foam
39%
40%
Support Foam
N/A
43%
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
42.0 cm (16.5")
N/A
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Queen
Posturepedic Plus Mount Auburn
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ComfortGrande Plus
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Sealy Posturepedic Plus Mount Auburn
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Sealy Posturepedic Plus Mount Auburn vs Novaform ComfortGrande Plus: Main Discussion
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