Products
Sealy Posturepedic Plus Mount Auburn
Beautyrest Silver BRS900
Tested using Methodology v1.0.1
Updated Oct 23, 2025 01:10 PM
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Sealy
Tested using Methodology v1.0.1
Updated Oct 21, 2025 01:32 PM
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Beautyrest
Mattress Type
Hybrid
Bounciness Level
Moderate (14 cm)
Sinking Level
Moderate (5 cm)
Firmness Level
Medium-Firm (56 Pa/mm)
Contouring Level
Low (30 cm)
Mattress Type
Innerspring
Bounciness Level
High (24 cm)
Sinking Level
Low (4 cm)
Firmness Level
Medium-Firm (53 Pa/mm)
Contouring Level
Moderate (26 cm)
Our Verdict
Sealy Posturepedic Plus Mount Auburn
Beautyrest Silver BRS900
The Beautyrest Silver BRS900 and the Sealy Posturepedic Plus Mount Auburn have different strengths. They're both medium-firm, but the Beautyrest contours around you more, while you'll sink more deeply into the Sealy's upper layers. The Beautyrest is bouncier and more responsive, so it's much easier to move around on. The Sealy has a slower-moving feel, but a better motion dissipation performance, so you might prefer it for sleeping with a partner.
Variants
- Posturepedic Plus Mount Auburn (Queen)
- Silver BRS900 (Queen (Medium))
Check Price
Queen
Posturepedic Plus Mount Auburn
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Sealy
Queen (Medium)
Silver BRS900
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Beautyrest
Main Differences for
Sleeping (In Development)
Sleeping (In Development)
Threshold
Sleeping (In Development)
8.1
8.5
Responsiveness
6.9
9.8
Full Comparison
Design
Style
Style Picture
Mattress Type
Hybrid
Innerspring
Bed-In-A-Box
No
No
Quilted Top Layer
Yes
Yes
Grab Handles
Yes
No
Thickness
33.8 cm (13.3")
30.1 cm (11.9")
Performance
Firmness
Head/Feet Firmness
Lumbar Firmness
Firmness Video
Normalized Stiffness @ Head/Feet
61 Pa/mm
55 Pa/mm
Normalized Stiffness @ Lumbar
56 Pa/mm
53 Pa/mm
Firmness Level
Medium-Firm (56 Pa/mm)
Medium-Firm (53 Pa/mm)
Bounciness
Bounciness Video
Maximum Rebound Height
14.5 cm (5.7")
24.0 cm (9.4")
Bounciness Level
Moderate (14 cm)
High (24 cm)
Sinking & Contouring
Sinking & Contouring Picture
Sinking Depth
5.2 cm (2.0")
4.3 cm (1.7")
Diameter Of Distortion
29.7 cm (11.7")
25.7 cm (10.1")
Sinking Level
Moderate (5 cm)
Low (4 cm)
Contouring Level
Low (30 cm)
Moderate (26 cm)
Responsiveness
6.9
9.8
Responsiveness Video
Response Time
1.4 s
0.1 s
Motion Isolation
7.7
7.4
Motion Isolation Video
Head/Feet Motion Isolation
Lumbar Motion Isolation
Peak Acceleration @ Head/Feet
2.59 g
4.19 g
Dissipation Time @ Head/Feet
0.44 s
0.46 s
Peak Acceleration @ Lumbar
3.47 g
3.68 g
Dissipation Time @ Lumbar
0.40 s
0.38 s
Edge Support
9.9
9.8
Naturalistic Loading Pad Video
Naturalistic Loading Pad
Small Platen
Naturalistic Loading Pad Indentation
105 mm
112 mm
Small Platen Indentation @ 0 mm From Edge
117 mm
114 mm
Small Platen Indentation @ 150 mm From Edge
113 mm
109 mm
Increased Indentation @ Mattress Edge
4 mm
5 mm
Cooling
7.6
7.7
Cooling Graph
Energy Transferred Over 1st Hour
58 kJ
56 kJ
Energy Transferred Over 8 Hours
160 kJ
169 kJ
Components
Cover
Cover Picture
Sleeping Surface Material
Not Provided by Manufacturer
Not Provided by Manufacturer
Removable
No
No
Machine Washable
No
No
Edge Construction
Edge Support Picture
Edge Component
Pocket Coils
Polyfoam
Foam Layer Material
Foam Layer Material Picture
Quilted Top Fill
Memory Foam + Polyfoam + Fiber Fill
Polyfoam + Fiber Fill
Upper Comfort Foam @ Head/Feet
N/A
Polyfoam
Upper Comfort Foam @ Lumbar
N/A
Polyfoam
Lower Comfort Foam @ Head/Feet
N/A
N/A
Lower Comfort Foam @ Lumbar
N/A
Memory Foam
Transition Foam
Polyfoam
N/A
Support Foam
N/A
N/A
Foam Layer Mass Density
5.3
2.8
Quilted Top Fill
39 kg/m³ (2.4 lb/cu.ft.)
19 kg/m³ (1.2 lb/cu.ft.)
Quilted Top Fill Foam Density vs. Reference
0.6
0.3
Upper Comfort Foam @ Head/Feet
N/A
17 kg/m³ (1.1 lb/cu.ft.)
Upper Comfort Foam @ Head/Feet Density vs. Reference
N/A
0.2
Upper Comfort Foam @ Lumbar
N/A
17 kg/m³ (1.1 lb/cu.ft.)
Upper Comfort Foam @ Lumbar Density vs. Reference
N/A
0.2
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
39 kg/m³ (2.4 lb/cu.ft.)
Lower Comfort Foam @ Lumbar Density vs. Reference
N/A
0.6
Transition Foam
24 kg/m³ (1.5 lb/cu.ft.)
N/A
Transition Foam Density vs. Reference
0.6
N/A
Support Foam
N/A
N/A
Support Foam Density vs Reference
N/A
N/A
Foam Layer Thickness
Foam Layer Thickness Picture
Quilted Top
7.7 cm (3.0")
5.0 cm (2.0")
Upper Comfort Foam @ Head/Feet
N/A
2.6 cm (1.0")
Upper Comfort Foam @ Lumbar
N/A
2.6 cm (1.0")
Lower Comfort Foam @ Head/Feet
N/A
N/A
Lower Comfort Foam @ Lumbar
N/A
1.2 cm (0.5")
Transition Foam
4.8 cm (1.9")
N/A
Support Foam
N/A
N/A
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
21.0 cm (8.3")
21.0 cm (8.3")
Support Layer Coil Density
297 coils/m² (28 coils/ft²)
337 coils/m² (31 coils/ft²)
Support Layer Coil Gauge @ Head/Feet
15 gauge
15 gauge
Support Layer Coil Gauge @ Lumbar
15 gauge
15 gauge
Foam Layer Firmness
Comfort Layer IPD
Transition & Support Layer IPD
Quilted Top Fill 25% IPD
1.3 kPa
2.0 kPa
Upper Comfort Foam @ Head/Feet 25% IPD
N/A
2.4 kPa
Upper Comfort Foam @ Lumbar 25% IPD
N/A
2.4 kPa
Lower Comfort Foam @ Head/Feet 25% IPD
N/A
N/A
Lower Comfort Foam @ Lumbar 25% IPD
N/A
2.0 kPa
Transition Foam 25% IPD
6.6 kPa
N/A
Support Foam 25% IPD
N/A
N/A
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
61 Pa/mm
82 Pa/mm
Normalized Support Layer Stiffness @ Lumbar
63 Pa/mm
71 Pa/mm
Foam Layer Resilience
Foam Layer Resilience Video
Quilted Top Fill
7%
31%
Upper Comfort Foam @ Head/Feet
N/A
40%
Upper Comfort Foam @ Lumbar
N/A
40%
Lower Comfort Foam @ Head/Feet
N/A
N/A
Lower Comfort Foam @ Lumbar
N/A
20%
Transition Foam
39%
N/A
Support Foam
N/A
N/A
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")
52.0 cm (20.5")
Check Price
Queen
Posturepedic Plus Mount Auburn
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Sealy
Queen (Medium)
Silver BRS900
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Beautyrest
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Sealy Posturepedic Plus Mount Auburn
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Sealy Posturepedic Plus Mount Auburn vs Beautyrest Silver BRS900: Main Discussion
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