Products
Novaform Serafina Pearl
Casper Snow
Tested using Methodology v1.0.1
Updated Dec 03, 2025 02:15 PM
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Amazon.com
Tested using Methodology v1.1
Updated Dec 12, 2025 03:43 PM
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Casper
Mattress Type
Foam
Bounciness Level
Very Low (2 cm)
Upper Comfort Foam @ LumbarMemory Foam
Sinking Level
Moderate (5 cm)
Firmness Level
Medium (44 Pa/mm)
Contouring Level
Low (32 cm)
Mattress Type
Hybrid
Upper Comfort Foam @ LumbarMemory Foam
Firmness Level
Medium (47 Pa/mm)
Our Verdict
Novaform Serafina Pearl
Casper Snow
The Casper Snow is better than the Novaform Serafina Pearl for most people. The Casper offers significantly better motion isolation and cooling, making it a better choice for light sleepers and those who tend to sleep hot. That said, the Novaform has better edge support and a more responsive feel, so you're less likely to feel stuck in place.
Variants
- Serafina Pearl (Queen (Plush))
- Snow (Queen)
Main Differences for
Sleeping (In Development)
Sleeping (In Development)
Threshold
Sleeping (In Development)
7.7
Full Comparison
Design
Style
Style Picture
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Mattress Type
Foam
Hybrid
Bed-In-A-Box
Yes
Yes
Quilted Top Layer
No
No
Grab Handles
Yes
No
Thickness
35.8 cm (14.1")
30.5 cm (12.0")
Performance
Firmness
Head/Feet Firmness
Lumbar Firmness
Firmness Video
Normalized Stiffness @ Head/Feet
42 Pa/mm
56 Pa/mm
Normalized Stiffness @ Lumbar
44 Pa/mm
47 Pa/mm
Firmness Level
Medium (44 Pa/mm)
Medium (47 Pa/mm)
Body Conformity
8.4
Shoulder Indentation vs. Body Weight
Indent @ 50 kg (110 lb)
62 mm (2.5")
Indent @ 80 kg (172 lb)
80 mm (3.2")
Indent @ 110 kg (242 lb)
96 mm (3.8")
Support
8.6
Pelvis Indentation vs. Body Weight
Indent Difference @ 50 kg (110 lb)
0 mm (0.0")
Indent Difference @ 80 kg (172 lb)
7 mm (0.3")
Indent Difference @ 110 kg (242 lb)
13 mm (0.5")
Bounciness
0.0
7.1
Bounciness Video
Maximum Rebound Height
2.0 cm (0.8")
13.0 cm (5.1")
Bounciness Level
Very Low (2 cm)
Comfort Layers Envelopment
0.0
7.7
Sinking & Contouring Picture
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Sinking Depth
5.4 cm (2.1")
5.6 cm (2.2")
Diameter Of Distortion
31.8 cm (12.5")
28.3 cm (11.1")
Sinking Level
Moderate (5 cm)
Contouring Level
Low (32 cm)
Responsiveness
7.7
4.5
Responsiveness Video
Response Time
1.0 s
3.1 s
Motion Isolation
8.4
8.5
Motion Isolation Video
Head/Feet Motion Isolation
Lumbar Motion Isolation
Peak Acceleration @ Head/Feet
0.70 g
0.56 g
Dissipation Time @ Head/Feet
0.32 s
0.33 s
Peak Acceleration @ Lumbar
3.25 g
2.91 g
Dissipation Time @ Lumbar
0.32 s
0.32 s
Edge Support
6.9
6.0
Naturalistic Loading Pad Video
Naturalistic Loading Pad
Small Platen
Naturalistic Loading Pad Indentation
156 mm
149 mm
Small Platen Indentation @ 0 mm From Edge
177 mm
194 mm
Small Platen Indentation @ 150 mm From Edge
150 mm
148 mm
Increased Indentation @ Mattress Edge
27 mm
46 mm
Cooling
7.8
8.9
Cooling Graph
Energy Transferred Over 1st Hour
63 kJ
71 kJ
Energy Transferred Over 8 Hours
164 kJ
198 kJ
Components
Cover
Cover Picture
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Sleeping Surface Material
Polyester, Nylon, Polyethylene
Polyester, Polyethylene, Spandex
Removable
No
No
Machine Washable
No
No
Edge Construction
Edge Support Picture
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Edge Component
None
Polyfoam
Foam Layer Material
Foam Layer Material Picture
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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
N/A
Support Foam
Polyfoam
N/A
Foam Layer Mass Density
6.8
5.3
Quilted Top Fill
N/A
N/A
Quilted Top Fill Foam Density vs. Reference
N/A
N/A
Upper Comfort Foam @ Head/Feet
50 kg/m³ (3.1 lb/cu.ft.)
40 kg/m³ (2.5 lb/cu.ft.)
Upper Comfort Foam @ Head/Feet Density vs. Reference
0.8
0.6
Upper Comfort Foam @ Lumbar
50 kg/m³ (3.1 lb/cu.ft.)
40 kg/m³ (2.5 lb/cu.ft.)
Upper Comfort Foam @ Lumbar Density vs. Reference
0.8
0.6
Lower Comfort Foam @ Head/Feet
N/A
38 kg/m³ (2.4 lb/cu.ft.)
Lower Comfort Foam @ Head/Feet Density vs. Reference
N/A
0.6
Lower Comfort Foam @ Lumbar
N/A
41 kg/m³ (2.6 lb/cu.ft.)
Lower Comfort Foam @ Lumbar Density vs. Reference
N/A
0.6
Transition Foam
35 kg/m³ (2.2 lb/cu.ft.)
N/A
Transition Foam Density vs. Reference
1.3
N/A
Support Foam
28 kg/m³ (1.7 lb/cu.ft.)
N/A
Support Foam Density vs Reference
0.9
N/A
Foam Layer Thickness
Foam Layer Thickness Picture
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Quilted Top
N/A
N/A
Upper Comfort Foam @ Head/Feet
7.3 cm (2.9")
2.7 cm (1.1")
Upper Comfort Foam @ Lumbar
7.3 cm (2.9")
2.7 cm (1.1")
Lower Comfort Foam @ Head/Feet
N/A
5.0 cm (2.0")
Lower Comfort Foam @ Lumbar
N/A
5.0 cm (2.0")
Transition Foam
7.5 cm (3.0")
N/A
Support Foam
21.0 cm (8.3")
N/A
Spring Layer Dimensions
Spring Layer Height Picture
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Spring Layer Density Picture
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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
16.8 cm (6.6")
Support Layer Coil Density
N/A
277 coils/m² (26 coils/ft²)
Support Layer Coil Gauge @ Head/Feet
N/A
14 gauge
Support Layer Coil Gauge @ Lumbar
N/A
14 gauge
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
1.8 kPa
1.0 kPa
Upper Comfort Foam @ Lumbar 25% IPD
1.8 kPa
1.0 kPa
Lower Comfort Foam @ Head/Feet 25% IPD
N/A
1.0 kPa
Lower Comfort Foam @ Lumbar 25% IPD
N/A
1.9 kPa
Transition Foam 25% IPD
1.9 kPa
N/A
Support Foam 25% IPD
3.7 kPa
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
N/A
97 Pa/mm
Normalized Support Layer Stiffness @ Lumbar
N/A
93 Pa/mm
Foam Layer Resilience
Foam Layer Resilience Video
Quilted Top Fill
N/A
N/A
Upper Comfort Foam @ Head/Feet
2%
2%
Upper Comfort Foam @ Lumbar
2%
2%
Lower Comfort Foam @ Head/Feet
N/A
1%
Lower Comfort Foam @ Lumbar
N/A
5%
Transition Foam
15%
N/A
Support Foam
46%
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
N/A
37.5 cm (14.8")
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Novaform Serafina Pearl
Casper Snow
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Novaform Serafina Pearl vs Casper Snow: Main Discussion
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