Saatva Classic (Luxury Firm) vs Helix Midnight Luxe 2025: Which Mattress Is Better?

Tested using Methodology v1.2

Updated Jul 22, 2026 11:08 PM

See Saatva Classic (Luxury Firm) Review

Mattress Type Innerspring

Bed-In-A-Box No

Upper Comfort Foam @ LumbarMemory Foam

Firmness Level Medium (43 Pa/mm)

Mattress Type Hybrid

Bed-In-A-Box Yes

Upper Comfort Foam @ LumbarMemory Foam

Firmness Level Medium (44 Pa/mm)

Recommended in 9 articles:
Back Pain
Side Sleepers
Brands
6

Our Verdict

Saatva Classic (Luxury Firm)

Helix Midnight Luxe 2025

The Helix Midnight Luxe 2025 is better than the Saatva Classic (Luxury Firm). The Helix is more supportive for most people, making it a better option for back/stomach sleeping. The better pressure relief also makes it better for lighter side sleepers. It's more cooling and better at dissipating motion, so you'll feel fewer of your partner's movements. It also contains more good-quality foam. That said, it's not as springy or responsive as the Saatva, so it doesn't feel as easy to move around on.

Variants

Classic (Luxury Firm - 14.5") (California King)
Classic (Luxury Firm - 14.5") (Full)

Midnight Luxe 2025 (California King)
Midnight Luxe 2025 (Full)

Review

See Helix Midnight Luxe 2025 Review

Check Price

California King

Classic (Luxury Firm - 14.5")

California King

Midnight Luxe 2025

Full

Classic (Luxury Firm - 14.5")

Full

Midnight Luxe 2025

King

Classic (Luxury Firm - 14.5")

King

Midnight Luxe 2025

Queen

Classic (Luxury Firm - 14.5")

Queen

Midnight Luxe 2025

Split King

Classic (Luxury Firm - 14.5")

Twin

Classic (Luxury Firm - 14.5")

Twin

Midnight Luxe 2025

Twin XL

Classic (Luxury Firm - 14.5")

Twin XL

Midnight Luxe 2025

Main Differences for

Side Sleeping

Threshold

0.10

Side Sleeping

7.3

8.2

No major differences between these mattresses for side sleeping. See full list of tests below.

Full Comparison

Side Sleeping

7.3

8.2

Back Sleeping

6.7

7.4

Stomach Sleeping

6.5

7.2

Longevity

5.1

6.8

Pressure Relief

7.4

8.3

Support

6.5

7.2

Cooling

7.4

8.2

Motion Dissipation

7.3

8.2

Responsiveness

9.6

8.2

Design

Style

Style Picture

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Mattress Type

Innerspring

Hybrid

Bed-In-A-Box

Yes

Quilted Top Layer

Yes

Grab Handles

Yes

Thickness

39.7 cm (15.6")

34.8 cm (13.7")

Performance

Firmness

Head/Feet Firmness

Preview Graph

Helix Midnight Luxe 2025 Head/Feet Firmness

Lumbar Firmness

Preview Graph

Helix Midnight Luxe 2025 Lumbar Firmness

Firmness Video

Normalized Stiffness @ Head/Feet

46 Pa/mm

41 Pa/mm

Normalized Stiffness @ Lumbar

43 Pa/mm

44 Pa/mm

Firmness Level

Medium (43 Pa/mm)

Medium (44 Pa/mm)

Body Conformity

7.5

8.3

Shoulder Indentation vs. Body Weight

Preview Graph

Helix Midnight Luxe 2025 Shoulder Indentation vs. Body Weight

Indent @ 50 kg (110 lb)

45 mm (1.8")

55 mm (2.2")

Indent @ 80 kg (176 lb)

68 mm (2.7")

83 mm (3.3")

Indent @ 110 kg (242 lb)

88 mm (3.4")

105 mm (4.1")

Support

6.5

7.2

Pelvis Indentation vs. Body Weight

Preview Graph

Helix Midnight Luxe 2025 Pelvis Indentation vs. Body Weight

Indent Difference @ 50 kg (110 lb)

20 mm (0.8")

18 mm (0.7")

Indent Difference @ 80 kg (176 lb)

28 mm (1.1")

22 mm (0.9")

Indent Difference @ 110 kg (242 lb)

31 mm (1.2")

22 mm (0.9")

Bounciness

8.6

7.4

Bounciness Video

Maximum Rebound Height

25.0 cm (9.8")

15.0 cm (5.9")

Comfort Layers Envelopment

7.1

8.0

Sinking & Contouring Picture

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Helix Midnight Luxe 2025 Sinking & Contouring Picture

Sinking Depth

5.1 cm (2.0")

5.3 cm (2.1")

Diameter Of Distortion

29.4 cm (11.6")

27.0 cm (10.6")

Responsiveness

9.8

8.4

Responsiveness Video

Response Time

0.1 s

0.7 s

Motion Isolation

7.3

8.2

Motion Isolation Video

Head/Feet Motion Isolation

Preview Graph

Helix Midnight Luxe 2025 Head/Feet Motion Isolation

Lumbar Motion Isolation

Preview Graph

Helix Midnight Luxe 2025 Lumbar Motion Isolation

Peak Acceleration @ Head/Feet

1.50 g

0.88 g

Dissipation Time @ Head/Feet

0.53 s

Peak Acceleration @ Lumbar

4.67 g

1.94 g

Dissipation Time @ Lumbar

0.49 s

0.61 s

Edge Support

8.2

9.0

Naturalistic Loading Pad Video

Naturalistic Loading Pad

Preview Graph

Helix Midnight Luxe 2025 Naturalistic Loading Pad

Small Platen

Preview Graph

Naturalistic Loading Pad Indentation

131 mm

134 mm

Small Platen Indentation @ 0 mm From Edge

152 mm

147 mm

Small Platen Indentation @ 150 mm From Edge

130 mm

150 mm

Increased Indentation @ Mattress Edge

21 mm

-3 mm

Cooling

7.4

8.2

Cooling Graph

Preview Graph

Energy Transferred Over 1st Hour

51 kJ

63 kJ

Energy Transferred Over 8 Hours

164 kJ

176 kJ

Components

Cover

Cover Picture

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Sleeping Surface Material

Organic Cotton

TENCEL

Removable

Machine Washable

Edge Construction

Edge Support Picture

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Helix Midnight Luxe 2025 Edge Support Picture

Edge Component

Polyfoam

Pocket Coils

Foam Layer Material

Foam Layer Material Picture

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Helix Midnight Luxe 2025 Foam Layer Material Picture

Quilted Top Fill

Polyfoam + Fiber Fill

Memory Foam + Polyfoam + Fiber Fill

Upper Comfort Foam @ Head/Feet

N/A

Memory Foam

Upper Comfort Foam @ Lumbar

Memory Foam

Lower Comfort Foam @ Head/Feet

Polyfoam

N/A

Lower Comfort Foam @ Lumbar

Polyfoam

N/A

Transition Foam

Polyfoam

Support Foam

Polyfoam

N/A

Foam Layer Mass Density

5.1

6.8

Quilted Top Fill

23 kg/m³ (1.4 lb/cu.ft.)

25 kg/m³ (1.6 lb/cu.ft.)

Quilted Top Fill Foam Density vs. Reference

0.6

0.7

Upper Comfort Foam @ Head/Feet

N/A

68 kg/m³ (4.2 lb/cu.ft.)

Upper Comfort Foam @ Head/Feet Density vs. Reference

N/A

1.1

Upper Comfort Foam @ Lumbar

35 kg/m³ (2.2 lb/cu.ft.)

68 kg/m³ (4.2 lb/cu.ft.)

Upper Comfort Foam @ Lumbar Density vs. Reference

0.5

1.1

Lower Comfort Foam @ Head/Feet

23 kg/m³ (1.4 lb/cu.ft.)

N/A

Lower Comfort Foam @ Head/Feet Density vs. Reference

0.6

N/A

Lower Comfort Foam @ Lumbar

23 kg/m³ (1.4 lb/cu.ft.)

N/A

Lower Comfort Foam @ Lumbar Density vs. Reference

0.6

N/A

Transition Foam

25 kg/m³ (1.6 lb/cu.ft.)

30 kg/m³ (1.8 lb/cu.ft.)

Transition Foam Density vs. Reference

0.7

1.0

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

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Helix Midnight Luxe 2025 Foam Layer Thickness Picture

Quilted Top

4.5 cm (1.8")

5.0 cm (2.0")

Upper Comfort Foam @ Head/Feet

N/A

5.1 cm (2.0")

Upper Comfort Foam @ Lumbar

1.0 cm (0.4")

5.1 cm (2.0")

Lower Comfort Foam @ Head/Feet

2.2 cm (0.9")

N/A

Lower Comfort Foam @ Lumbar

2.2 cm (0.9")

N/A

Transition Foam

2.4 cm (0.9")

2.5 cm (1.0")

Support Foam

5.0 cm (2.0")

N/A

Spring Layer Dimensions

Spring Layer Height Picture

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Helix Midnight Luxe 2025 Spring Layer Height Picture

Spring Layer Density Picture

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Helix Midnight Luxe 2025 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)

248 coils/m² (23 coils/ft²)

Support Layer Coil Gauge @ Head/Feet

15 gauge

14 gauge

Support Layer Coil Gauge @ Lumbar

15 gauge

13 gauge

Foam Layer Firmness

Comfort Layer IPD

Preview Graph

Helix Midnight Luxe 2025 Comfort Layer IPD

Transition & Support Layer IPD

Preview Graph

Helix Midnight Luxe 2025 Transition & Support Layer IPD

Quilted Top Fill 25% IPD

2.1 kPa

1.4 kPa

Upper Comfort Foam @ Head/Feet 25% IPD

N/A

2.2 kPa

Upper Comfort Foam @ Lumbar 25% IPD

2.0 kPa

2.2 kPa

Lower Comfort Foam @ Head/Feet 25% IPD

2.5 kPa

N/A

Lower Comfort Foam @ Lumbar 25% IPD

2.5 kPa

N/A

Transition Foam 25% IPD

4.6 kPa

4.3 kPa

Support Foam 25% IPD

9.5 kPa

N/A

Spring Layer Firmness

Comfort Layer Firmness

Preview Graph

Helix Midnight Luxe 2025 Comfort Layer Firmness

Support Layer Firmness

Preview Graph

Helix Midnight Luxe 2025 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

81 Pa/mm

Normalized Support Layer Stiffness @ Lumbar

74 Pa/mm

54 Pa/mm

Foam Layer Resilience

Foam Layer Resilience Video

Quilted Top Fill

48%

45%

Upper Comfort Foam @ Head/Feet

N/A

Upper Comfort Foam @ Lumbar

21%

Lower Comfort Foam @ Head/Feet

52%

N/A

Lower Comfort Foam @ Lumbar

52%

N/A

Transition Foam

41%

47%

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")

46.0 cm (18.1")

Check Price

California King

Classic (Luxury Firm - 14.5")

California King

Midnight Luxe 2025

Full

Classic (Luxury Firm - 14.5")

Full

Midnight Luxe 2025

King

Classic (Luxury Firm - 14.5")

King

Midnight Luxe 2025

Queen

Classic (Luxury Firm - 14.5")

Queen

Midnight Luxe 2025

Split King

Classic (Luxury Firm - 14.5")

Twin

Classic (Luxury Firm - 14.5")

Twin

Midnight Luxe 2025

Twin XL

Classic (Luxury Firm - 14.5")

Twin XL

Midnight Luxe 2025