Products
Saatva Classic
Helix Midnight 2024
Tested using Methodology v1.0.1
Updated Oct 21, 2025 01:38 PM
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Saatva
Tested using Methodology v1.0.1
Updated Oct 03, 2025 07:08 PM
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Helix
Mattress Type
Innerspring
Bounciness Level
High (25 cm)
Sinking Level
Moderate (5 cm)
Firmness Level
Medium (43 Pa/mm)
Contouring Level
Low (29 cm)
Mattress Type
Hybrid
Bounciness Level
Moderate (16 cm)
Sinking Level
Low (4 cm)
Firmness Level
Medium (45 Pa/mm)
Contouring Level
Moderate (26 cm)
Our Verdict
Saatva Classic
Helix Midnight 2024
The Helix Midnight 2024 is a better option than the Saatva Classic for most people. Both mattresses have a medium level of firmness, but the Helix comes out ahead in a few areas. The biggest difference is in edge support. On the Helix, you can sleep right next to the edge without worrying about slipping off. It's more cooling, too, and while it's not quite cooling enough for hot sleepers, it's a significant improvement over the Saatva. The Helix has slightly better motion isolation as well, though it's probably not a big enough difference to be noticeable. The one area where the Saatva comes out ahead is responsiveness. It responds more quickly when compressed, making it easier to move around on. Still, unless responsiveness is your top priority, the Helix is a better choice.
Variants
- Classic (Queen (Luxury Firm/14.5"))
- Midnight 2024 (Queen)
Main Differences for
Sleeping (In Development)
Sleeping (In Development)
Threshold
Sleeping (In Development)
7.9
8.2
Cooling
7.3
7.9
Edge Support
8.2
9.6
Full Comparison
Design
Style
Style Picture
Mattress Type
Innerspring
Hybrid
Bed-In-A-Box
No
Yes
Quilted Top Layer
Yes
No
Grab Handles
Yes
No
Thickness
39.7 cm (15.6")
29.8 cm (11.7")
Performance
Firmness
Head/Feet Firmness
Lumbar Firmness
Firmness Video
Normalized Stiffness @ Head/Feet
46 Pa/mm
43 Pa/mm
Normalized Stiffness @ Lumbar
43 Pa/mm
45 Pa/mm
Firmness Level
Medium (43 Pa/mm)
Medium (45 Pa/mm)
Bounciness
Bounciness Video
Maximum Rebound Height
25.0 cm (9.8")
16.0 cm (6.3")
Bounciness Level
High (25 cm)
Moderate (16 cm)
Sinking & Contouring
Sinking & Contouring Picture
Sinking Depth
5.1 cm (2.0")
4.4 cm (1.7")
Diameter Of Distortion
29.4 cm (11.6")
25.9 cm (10.2")
Sinking Level
Moderate (5 cm)
Low (4 cm)
Contouring Level
Low (29 cm)
Moderate (26 cm)
Responsiveness
9.8
8.1
Responsiveness Video
Response Time
0.1 s
0.9 s
Motion Isolation
7.3
7.4
Motion Isolation Video
Head/Feet Motion Isolation
Lumbar Motion Isolation
Peak Acceleration @ Head/Feet
1.50 g
2.17 g
Dissipation Time @ Head/Feet
0.53 s
0.53 s
Peak Acceleration @ Lumbar
4.67 g
3.68 g
Dissipation Time @ Lumbar
0.49 s
0.55 s
Edge Support
8.2
9.6
Naturalistic Loading Pad Video
Naturalistic Loading Pad
Small Platen
Naturalistic Loading Pad Indentation
131 mm
117 mm
Small Platen Indentation @ 0 mm From Edge
152 mm
140 mm
Small Platen Indentation @ 150 mm From Edge
130 mm
136 mm
Increased Indentation @ Mattress Edge
21 mm
4 mm
Cooling
7.3
7.9
Cooling Graph
Energy Transferred Over 1st Hour
51 kJ
58 kJ
Energy Transferred Over 8 Hours
164 kJ
174 kJ
Components
Cover
Cover Picture
Sleeping Surface Material
Organic Cotton
Not Provided by Manufacturer
Removable
No
No
Machine Washable
No
No
Edge Construction
Edge Support Picture
Edge Component
Polyfoam
Pocket Coils
Foam Layer Material
Foam Layer Material Picture
Quilted Top Fill
Polyfoam + Fiber Fill
N/A
Upper Comfort Foam @ Head/Feet
N/A
Memory Foam
Upper Comfort Foam @ Lumbar
Memory Foam
Memory Foam
Lower Comfort Foam @ Head/Feet
Polyfoam
Polyfoam
Lower Comfort Foam @ Lumbar
Polyfoam
Polyfoam
Transition Foam
Polyfoam
Polyfoam
Support Foam
Polyfoam
N/A
Foam Layer Mass Density
5.1
5.4
Quilted Top Fill
23 kg/m³ (1.4 lb/cu.ft.)
N/A
Quilted Top Fill Foam Density vs. Reference
0.6
N/A
Upper Comfort Foam @ Head/Feet
N/A
43 kg/m³ (2.7 lb/cu.ft.)
Upper Comfort Foam @ Head/Feet Density vs. Reference
N/A
0.7
Upper Comfort Foam @ Lumbar
35 kg/m³ (2.2 lb/cu.ft.)
43 kg/m³ (2.7 lb/cu.ft.)
Upper Comfort Foam @ Lumbar Density vs. Reference
0.5
0.7
Lower Comfort Foam @ Head/Feet
23 kg/m³ (1.4 lb/cu.ft.)
22 kg/m³ (1.4 lb/cu.ft.)
Lower Comfort Foam @ Head/Feet Density vs. Reference
0.6
0.5
Lower Comfort Foam @ Lumbar
23 kg/m³ (1.4 lb/cu.ft.)
22 kg/m³ (1.4 lb/cu.ft.)
Lower Comfort Foam @ Lumbar Density vs. Reference
0.6
0.5
Transition Foam
25 kg/m³ (1.6 lb/cu.ft.)
25 kg/m³ (1.6 lb/cu.ft.)
Transition Foam Density vs. Reference
0.7
0.7
Support Foam
23 kg/m³ (1.4 lb/cu.ft.)
N/A
Support Foam Density vs Reference
0.6
N/A
Foam Layer Thickness
Foam Layer Thickness Picture
Quilted Top
4.5 cm (1.8")
N/A
Upper Comfort Foam @ Head/Feet
N/A
3.8 cm (1.5")
Upper Comfort Foam @ Lumbar
1.0 cm (0.4")
3.8 cm (1.5")
Lower Comfort Foam @ Head/Feet
2.2 cm (0.9")
2.7 cm (1.1")
Lower Comfort Foam @ Lumbar
2.2 cm (0.9")
2.7 cm (1.1")
Transition Foam
2.4 cm (0.9")
1.9 cm (0.7")
Support Foam
5.0 cm (2.0")
N/A
Spring Layer Dimensions
Spring Layer Height Picture
Spring Layer Density Picture
Comfort Layer Height
11.5 cm (4.5")
N/A
Comfort Layer Coil Density
278 coils/m² (26 coils/ft²)
N/A
Comfort Layer Coil Gauge
15 gauge
N/A
Support Layer Height
11.5 cm (4.5")
20.5 cm (8.1")
Support Layer Coil Density
278 coils/m² (26 coils/ft²)
241 coils/m² (22 coils/ft²)
Support Layer Coil Gauge @ Head/Feet
15 gauge
14 gauge
Support Layer Coil Gauge @ Lumbar
15 gauge
14 gauge
Foam Layer Firmness
Comfort Layer IPD
Transition & Support Layer IPD
Quilted Top Fill 25% IPD
2.1 kPa
N/A
Upper Comfort Foam @ Head/Feet 25% IPD
N/A
1.7 kPa
Upper Comfort Foam @ Lumbar 25% IPD
2.0 kPa
1.7 kPa
Lower Comfort Foam @ Head/Feet 25% IPD
2.5 kPa
3.6 kPa
Lower Comfort Foam @ Lumbar 25% IPD
2.5 kPa
3.6 kPa
Transition Foam 25% IPD
4.6 kPa
4.6 kPa
Support Foam 25% IPD
9.5 kPa
N/A
Spring Layer Firmness
Comfort Layer Firmness
Support Layer Firmness
Spring Layer Firmness
Normalized Comfort Layer Stiffness @ Head/Feet
79 Pa/mm
N/A
Normalized Comfort Layer Stiffness @ Lumbar
70 Pa/mm
N/A
Normalized Support Layer Stiffness @ Head/Feet
58 Pa/mm
56 Pa/mm
Normalized Support Layer Stiffness @ Lumbar
74 Pa/mm
56 Pa/mm
Foam Layer Resilience
Foam Layer Resilience Video
Quilted Top Fill
48%
N/A
Upper Comfort Foam @ Head/Feet
N/A
5%
Upper Comfort Foam @ Lumbar
21%
5%
Lower Comfort Foam @ Head/Feet
52%
51%
Lower Comfort Foam @ Lumbar
52%
51%
Transition Foam
41%
31%
Support Foam
33%
N/A
Spring Layer Bounciness
Comfort Spring Layer Bounciness Video
Support Spring Layer Bounciness Video
Comfort Spring Layer Maximum Rebound Height
40.0 cm (15.7")
N/A
Support Spring Layer Maximum Rebound Height
39.0 cm (15.4")
23.0 cm (9.1")
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Saatva Classic
Helix Midnight 2024
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Saatva Classic vs Helix Midnight 2024: Main Discussion
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