Casper Cooling Select Hybrid vs Silk & Snow Mattress: Which Mattress Is Better?

Tested using Methodology v1.2

Updated Jul 30, 2026 07:51 PM

See Casper Cooling Select Hybrid Review

Mattress Type Hybrid

Bed-In-A-Box Yes

Upper Comfort Foam @ LumbarPolyfoam

Firmness Level Medium-Plush (40 Pa/mm)

Mattress Type Foam

Bed-In-A-Box Yes

Upper Comfort Foam @ LumbarMemory Foam

Firmness Level Medium-Plush (39 Pa/mm)

Recommended in 1 article:
Hybrid

Recommended in 6 articles:
Mattresses
Side Sleepers
King Size
3

Our Verdict

Casper Cooling Select Hybrid

Silk & Snow Mattress

The Silk & Snow Mattress provides a better overall performance than the Casper Cooling Select Hybrid, but either option can be a good choice depending on your priorities. Choose the Silk and Snow if you sleep on your side or if you sleep with a partner. It provides more pressure relief, which helps cushion your shoulder and hip while side sleeping, and you notice less movement across the mattress, helping you sleep peacefully. Go for the Casper if you sleep on your back or stomach, since the extra support helps lift your hips, keeping your back in more of a straight line in either position. It's also more responsive, so you might like it if ease of movement is important to you.

Variants

Cooling Select Hybrid (California King)
Cooling Select Hybrid (Full)

Mattress (Plush) (California King)
Mattress (Plush) (Full)

Review

See Silk & Snow Mattress Review

Check Price

California King

Cooling Select Hybrid

California King

Mattress (Plush)

Full

Cooling Select Hybrid

Full

Mattress (Plush)

King

Cooling Select Hybrid

King

Mattress (Plush)

Queen

Cooling Select Hybrid

Queen

Mattress (Plush)

Twin

Mattress (Plush)

Twin XL

Mattress (Plush)

Main Differences for

Side Sleeping

Threshold

0.10

Side Sleeping

7.6

8.1

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

Full Comparison

Side Sleeping

7.6

8.1

Back Sleeping

7.4

7.3

Stomach Sleeping

7.3

7.1

Longevity

6.3

6.7

Pressure Relief

7.6

8.2

Support

7.3

7.0

Cooling

8.2

8.1

Motion Dissipation

7.9

9.4

Responsiveness

8.7

7.7

Design

Style

Style Picture

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Mattress Type

Hybrid

Foam

Bed-In-A-Box

Yes

Quilted Top Layer

Grab Handles

Thickness

29.4 cm (11.6")

29.2 cm (11.5")

Performance

Firmness

Head/Feet Firmness

Preview Graph

Lumbar Firmness

Preview Graph

Firmness Video

Normalized Stiffness @ Head/Feet

37 Pa/mm

38 Pa/mm

Normalized Stiffness @ Lumbar

40 Pa/mm

39 Pa/mm

Firmness Level

Medium-Plush (40 Pa/mm)

Medium-Plush (39 Pa/mm)

Body Conformity

7.9

8.7

Shoulder Indentation vs. Body Weight

Preview Graph

Silk & Snow Mattress Shoulder Indentation vs. Body Weight

Body Conformity Picture 1

Body Conformity Picture 2

Indent @ 50 kg (110 lb)

49 mm (1.9")

63 mm (2.5")

Indent @ 80 kg (176 lb)

77 mm (3.0")

91 mm (3.6")

Indent @ 110 kg (242 lb)

95 mm (3.7")

119 mm (4.7")

Support

7.3

7.0

Pelvis Indentation vs. Body Weight

Preview Graph

Silk & Snow Mattress Pelvis Indentation vs. Body Weight

Indent Difference @ 50 kg (110 lb)

18 mm (0.7")

17 mm (0.6")

Indent Difference @ 80 kg (176 lb)

20 mm (0.8")

21 mm (0.8")

Indent Difference @ 110 kg (242 lb)

19 mm (0.7")

27 mm (1.1")

Bounciness

7.8

2.2

Bounciness Video

Maximum Rebound Height

18.0 cm (7.1")

2.0 cm (0.8")

Comfort Layers Envelopment

6.5

6.3

Sinking & Contouring Picture

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Silk & Snow Mattress Sinking & Contouring Picture

Sinking Depth

5.4 cm (2.1")

5.6 cm (2.2")

Diameter Of Distortion

32.2 cm (12.7")

33.4 cm (13.2")

Responsiveness

8.9

9.1

Responsiveness Video

Response Time

0.6 s

0.5 s

Motion Isolation

7.9

9.4

Motion Isolation Video

Head/Feet Motion Isolation

Preview Graph

Silk & Snow Mattress Head/Feet Motion Isolation

Lumbar Motion Isolation

Preview Graph

Silk & Snow Mattress Lumbar Motion Isolation

Peak Acceleration @ Head/Feet

1.08 g

0.29 g

Dissipation Time @ Head/Feet

0.43 s

0.32 s

Peak Acceleration @ Lumbar

3.82 g

1.27 g

Dissipation Time @ Lumbar

0.39 s

0.25 s

Edge Support

5.7

6.6

Naturalistic Loading Pad Video

Naturalistic Loading Pad

Preview Graph

Silk & Snow Mattress Naturalistic Loading Pad

Small Platen

Preview Graph

Naturalistic Loading Pad Indentation

168 mm

164 mm

Small Platen Indentation @ 0 mm From Edge

189 mm

202 mm

Small Platen Indentation @ 150 mm From Edge

148 mm

175 mm

Increased Indentation @ Mattress Edge

41 mm

27 mm

Cooling

8.2

8.1

Cooling Graph

Preview Graph

Energy Transferred Over 1st Hour

67 kJ

Energy Transferred Over 8 Hours

172 kJ

166 kJ

Components

Cover

Cover Picture

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Sleeping Surface Material

Polyester, Polyethylene, Spandex

Polyester

Removable

Yes

Machine Washable

Yes

Edge Construction

Edge Support Picture

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Silk & Snow Mattress Edge Support Picture

Edge Component

Polyfoam

None

Foam Layer Material

Foam Layer Material Picture

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Silk & Snow Mattress Foam Layer Material Picture

Quilted Top Fill

N/A

Upper Comfort Foam @ Head/Feet

Polyfoam

Memory Foam

Upper Comfort Foam @ Lumbar

Polyfoam

Memory Foam

Lower Comfort Foam @ Head/Feet

Memory Foam

N/A

Lower Comfort Foam @ Lumbar

Memory Foam

N/A

Transition Foam

Polyfoam

Support Foam

N/A

Polyfoam

Foam Layer Mass Density

6.3

6.7

Quilted Top Fill

N/A

Quilted Top Fill Foam Density vs. Reference

N/A

Upper Comfort Foam @ Head/Feet

41 kg/m³ (2.6 lb/cu.ft.)

54 kg/m³ (3.4 lb/cu.ft.)

Upper Comfort Foam @ Head/Feet Density vs. Reference

1.7

0.8

Upper Comfort Foam @ Lumbar

41 kg/m³ (2.6 lb/cu.ft.)

54 kg/m³ (3.4 lb/cu.ft.)

Upper Comfort Foam @ Lumbar Density vs. Reference

1.7

0.8

Lower Comfort Foam @ Head/Feet

45 kg/m³ (2.8 lb/cu.ft.)

N/A

Lower Comfort Foam @ Head/Feet Density vs. Reference

0.7

N/A

Lower Comfort Foam @ Lumbar

45 kg/m³ (2.8 lb/cu.ft.)

N/A

Lower Comfort Foam @ Lumbar Density vs. Reference

0.7

N/A

Transition Foam

25 kg/m³ (1.6 lb/cu.ft.)

27 kg/m³ (1.7 lb/cu.ft.)

Transition Foam Density vs. Reference

0.7

0.8

Support Foam

N/A

32 kg/m³ (2.0 lb/cu.ft.)

Support Foam Density vs Reference

N/A

1.1

Foam Layer Thickness

Foam Layer Thickness Picture

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Silk & Snow Mattress Foam Layer Thickness Picture

Quilted Top

N/A

Upper Comfort Foam @ Head/Feet

3.8 cm (1.5")

5.0 cm (2.0")

Upper Comfort Foam @ Lumbar

3.8 cm (1.5")

5.0 cm (2.0")

Lower Comfort Foam @ Head/Feet

3.4 cm (1.3")

N/A

Lower Comfort Foam @ Lumbar

3.4 cm (1.3")

N/A

Transition Foam

3.4 cm (1.3")

5.0 cm (2.0")

Support Foam

N/A

19.1 cm (7.5")

Spring Layer Dimensions

Spring Layer Height Picture

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Silk & Snow Mattress Spring Layer Height Picture

Spring Layer Density Picture

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Silk & Snow Mattress Spring Layer Density Picture

Comfort Layer Height

N/A

Comfort Layer Coil Density

N/A

Comfort Layer Coil Gauge

N/A

Support Layer Height

15.4 cm (6.1")

N/A

Support Layer Coil Density

268 coils/m² (25 coils/ft²)

N/A

Support Layer Coil Gauge @ Head/Feet

14 gauge

N/A

Support Layer Coil Gauge @ Lumbar

14 gauge

N/A

Foam Layer Firmness

Comfort Layer IPD

Preview Graph

Transition & Support Layer IPD

Preview Graph

Silk & Snow Mattress Transition & Support Layer IPD

Quilted Top Fill 25% IPD

N/A

Upper Comfort Foam @ Head/Feet 25% IPD

2.3 kPa

1.6 kPa

Upper Comfort Foam @ Lumbar 25% IPD

2.3 kPa

1.6 kPa

Lower Comfort Foam @ Head/Feet 25% IPD

1.5 kPa

N/A

Lower Comfort Foam @ Lumbar 25% IPD

1.5 kPa

N/A

Transition Foam 25% IPD

2.1 kPa

1.6 kPa

Support Foam 25% IPD

N/A

3.2 kPa

Spring Layer Firmness

Comfort Layer Firmness

Support Layer Firmness

Preview Graph

Silk & Snow Mattress Support Layer Firmness

Spring Layer Firmness

Normalized Comfort Layer Stiffness @ Head/Feet

N/A

Normalized Comfort Layer Stiffness @ Lumbar

N/A

Normalized Support Layer Stiffness @ Head/Feet

104 Pa/mm

N/A

Normalized Support Layer Stiffness @ Lumbar

102 Pa/mm

N/A

Foam Layer Resilience

Foam Layer Resilience Video

Quilted Top Fill

N/A

Upper Comfort Foam @ Head/Feet

32%

Upper Comfort Foam @ Lumbar

32%

Lower Comfort Foam @ Head/Feet

N/A

Lower Comfort Foam @ Lumbar

N/A

Transition Foam

37%

34%

Support Foam

N/A

45%

Spring Layer Bounciness

Comfort Spring Layer Bounciness Video

Support Spring Layer Bounciness Video

Comfort Spring Layer Maximum Rebound Height

N/A

Support Spring Layer Maximum Rebound Height

42.0 cm (16.5")

N/A

Check Price

California King

Cooling Select Hybrid

California King

Mattress (Plush)

Full

Cooling Select Hybrid

Full

Mattress (Plush)

King

Cooling Select Hybrid

King

Mattress (Plush)

Queen

Cooling Select Hybrid

Queen

Mattress (Plush)

Twin

Mattress (Plush)

Twin XL

Mattress (Plush)