Kirkland Stearns & Foster Pillow Top Lakeridge vs Sealy Posturepedic Pro Highland Manor

Which Mattress Is Better?

Products

Kirkland Stearns & Foster Pillow Top Lakeridge
Sealy Posturepedic Pro Highland Manor

Tested using Methodology v1.2

Updated Jul 30, 2026 07:51 PM

Amazon

Tested using Methodology v1.2

Updated Jul 30, 2026 07:44 PM

Amazon
Kirkland Stearns & Foster Pillow Top Lakeridge Picture

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Sealy Posturepedic Pro Highland Manor Picture

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Our Verdict

Kirkland Stearns & Foster Pillow Top Lakeridge

Sealy Posturepedic Pro Highland Manor

The Sealy Posturepedic Pro Highland Manor and the Kirkland Stearns & Foster Pillow Top Lakeridge are both Costco-exclusive hybrid mattresses, but the Sealy will suit a wider range of sleepers. It's firmer than the Kirkland, making it a better fit for back and stomach sleepers and helping keep their spines aligned. The Kirkland has thicker foam layers and is less firm overall, making it a better fit for side sleepers. Neither mattress holds up especially well over the long term, as both use foam below the density we look for in lasting comfort.

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Variants

  • Stearns & Foster Pillow Top Lakeridge (California King)
  • Stearns & Foster Pillow Top Lakeridge (King)
  • Posturepedic Pro Highland Manor (California King)
  • Posturepedic Pro Highland Manor (Full)

Check Price

California King
Stearns & Foster Pillow Top Lakeridge
Amazon
California King
Posturepedic Pro Highland Manor
Amazon
 
Full
Posturepedic Pro Highland Manor
Amazon
King
Stearns & Foster Pillow Top Lakeridge
Amazon
King
Posturepedic Pro Highland Manor
Amazon
Queen
Stearns & Foster Pillow Top Lakeridge
Amazon
Queen
Posturepedic Pro Highland Manor
Amazon

Main Differences for
Side Sleeping

Threshold 

0.10

Side Sleeping 
 

7.7
7.4
No major differences between these mattresses for side sleeping. See full list of tests below.

Full Comparison

Design

Style 
 

Style Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Style Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor Style Picture

Mattress Type 
 

Hybrid
Hybrid

Bed-In-A-Box 
 

No
No

Quilted Top Layer 
 

Yes
Yes

Grab Handles 
 

Yes
No

Thickness  

34.3 cm (13.5")
33.5 cm (13.2")
Performance

Firmness 
 

Head/Feet Firmness  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Head/Feet Firmness
 Preview Graph
Sealy Posturepedic Pro Highland Manor Head/Feet Firmness

Lumbar Firmness  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Lumbar Firmness
 Preview Graph
Sealy Posturepedic Pro Highland Manor Lumbar Firmness

Firmness Video  

Normalized Stiffness @ Head/Feet 
 

45 Pa/mm
56 Pa/mm

Normalized Stiffness @ Lumbar 
 

43 Pa/mm
56 Pa/mm

Firmness Level 
 

Medium (43 Pa/mm)
Medium-Firm (56 Pa/mm)

Body Conformity 
 

7.7
7.2

Shoulder Indentation vs. Body Weight  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Shoulder Indentation vs. Body Weight
 Preview Graph
Sealy Posturepedic Pro Highland Manor Shoulder Indentation vs. Body Weight

Body Conformity Picture  

Indent @ 50 kg (110 lb) 
 

47 mm (1.9")
44 mm (1.7")

Indent @ 80 kg (176 lb) 
 

73 mm (2.9")
64 mm (2.5")

Indent @ 110 kg (242 lb) 
 

90 mm (3.6")
80 mm (3.2")

Support 
 

6.6
7.6

Pelvis Indentation vs. Body Weight  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Pelvis Indentation vs. Body Weight
 Preview Graph
Sealy Posturepedic Pro Highland Manor Pelvis Indentation vs. Body Weight

Indent Difference @ 50 kg (110 lb) 
 

19 mm (0.7")
13 mm (0.5")

Indent Difference @ 80 kg (176 lb) 
 

29 mm (1.1")
17 mm (0.7")

Indent Difference @ 110 kg (242 lb) 
 

29 mm (1.1")
19 mm (0.8")

Bounciness 
 

7.1
7.9

Bounciness Video  

Maximum Rebound Height 
 

13.0 cm (5.1")
19.0 cm (7.5")

Comfort Layers Envelopment 
 

8.3
8.0

Sinking & Contouring Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Sinking & Contouring Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor Sinking & Contouring Picture

Sinking Depth 
 

5.9 cm (2.3")
5.2 cm (2.1")

Diameter Of Distortion 
 

26.6 cm (10.5")
27.1 cm (10.7")

Responsiveness 
 

8.8
8.4

Responsiveness Video  

Response Time 
 

0.6 s
0.7 s

Motion Isolation 
 

8.6
7.6

Motion Isolation Video  

Head/Feet Motion Isolation  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Head/Feet Motion Isolation
 Preview Graph
Sealy Posturepedic Pro Highland Manor Head/Feet Motion Isolation

Lumbar Motion Isolation  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Lumbar Motion Isolation
 Preview Graph
Sealy Posturepedic Pro Highland Manor Lumbar Motion Isolation

Peak Acceleration @ Head/Feet 
 

1.70 g
2.69 g

Dissipation Time @ Head/Feet 
 

0.34 s
0.54 s

Peak Acceleration @ Lumbar 
 

2.47 g
3.55 g

Dissipation Time @ Lumbar 
 

0.34 s
0.40 s

Edge Support 
 

9.3
8.9

Naturalistic Loading Pad Video  

Naturalistic Loading Pad  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Naturalistic Loading Pad
 Preview Graph
Sealy Posturepedic Pro Highland Manor Naturalistic Loading Pad

Small Platen  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Small Platen
 Preview Graph
Sealy Posturepedic Pro Highland Manor Small Platen

Naturalistic Loading Pad Indentation 
 

119 mm
127 mm

Small Platen Indentation @ 0 mm From Edge 
 

136 mm
140 mm

Small Platen Indentation @ 150 mm From Edge 
 

126 mm
128 mm

Increased Indentation @ Mattress Edge 
 

10 mm
12 mm

Cooling 
 

7.9
7.8

Cooling Graph  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Cooling Graph
 Preview Graph
Sealy Posturepedic Pro Highland Manor Cooling Graph

Energy Transferred Over 1st Hour 
 

61 kJ
56 kJ

Energy Transferred Over 8 Hours 
 

166 kJ
169 kJ
Components

Cover 
 

Cover Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Cover Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor Cover Picture

Sleeping Surface Material 
 

TENCEL
Polyester, Rayon

Removable 
 

No
No

Machine Washable 
 

No
No

Edge Construction 
 

Edge Support Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Edge Support Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor Edge Support Picture

Edge Component 
 

Pocket Coils
Pocket Coils

Foam Layer Material 
 

Foam Layer Material Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Foam Layer Material Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor Foam Layer Material Picture

Quilted Top Fill  

Polyfoam + Fiber Fill
Memory Foam + Polyfoam + Fiber Fill

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
Polyfoam

Support Foam  

N/A
N/A

Foam Layer Mass Density 
 

5.3
5.2

Quilted Top Fill  

24 kg/m³ (1.5 lb/cu.ft.)
20 kg/m³ (1.2 lb/cu.ft.)

Quilted Top Fill Foam Density vs. Reference 
 

0.6
0.4

Upper Comfort Foam @ Head/Feet  

24 kg/m³ (1.5 lb/cu.ft.)
43 kg/m³ (2.7 lb/cu.ft.)

Upper Comfort Foam @ Head/Feet Density vs. Reference 
 

0.7
0.7

Upper Comfort Foam @ Lumbar  

24 kg/m³ (1.5 lb/cu.ft.)
43 kg/m³ (2.7 lb/cu.ft.)

Upper Comfort Foam @ Lumbar Density vs. Reference 
 

0.7
0.7

Lower Comfort Foam @ Head/Feet  

41 kg/m³ (2.5 lb/cu.ft.)
N/A

Lower Comfort Foam @ Head/Feet Density vs. Reference 
 

0.6
N/A

Lower Comfort Foam @ Lumbar  

41 kg/m³ (2.5 lb/cu.ft.)
N/A

Lower Comfort Foam @ Lumbar Density vs. Reference 
 

0.6
N/A

Transition Foam  

24 kg/m³ (1.5 lb/cu.ft.)
24 kg/m³ (1.5 lb/cu.ft.)

Transition Foam Density vs. Reference 
 

0.6
0.6

Support Foam  

N/A
N/A

Support Foam Density vs Reference 
 

N/A
N/A

Foam Layer Thickness 
 

Foam Layer Thickness Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Foam Layer Thickness Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor Foam Layer Thickness Picture

Quilted Top 
 

7.8 cm (3.1")
6.3 cm (2.5")

Upper Comfort Foam @ Head/Feet  

2.4 cm (0.9")
1.3 cm (0.5")

Upper Comfort Foam @ Lumbar  

2.4 cm (0.9")
1.3 cm (0.5")

Lower Comfort Foam @ Head/Feet  

1.8 cm (0.7")
N/A

Lower Comfort Foam @ Lumbar  

1.8 cm (0.7")
N/A

Transition Foam  

4.8 cm (1.9")
4.9 cm (1.9")

Support Foam  

N/A
N/A

Spring Layer Dimensions 
 

Spring Layer Height Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Spring Layer Height Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor Spring Layer Height Picture

Spring Layer Density Picture 
 

Compare High-Res
Kirkland Stearns & Foster Pillow Top Lakeridge Spring Layer Density Picture
Compare High-Res
Sealy Posturepedic Pro Highland Manor 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 
 

19.1 cm (7.5")
21.0 cm (8.3")

Support Layer Coil Density 
 

255 coils/m² (24 coils/ft²)
355 coils/m² (33 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  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Comfort Layer IPD
 Preview Graph
Sealy Posturepedic Pro Highland Manor Comfort Layer IPD

Transition & Support Layer IPD  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Transition & Support Layer IPD
 Preview Graph
Sealy Posturepedic Pro Highland Manor Transition & Support Layer IPD

Quilted Top Fill 25% IPD 
 

1.9 kPa
1.6 kPa

Upper Comfort Foam @ Head/Feet 25% IPD 
 

2.5 kPa
1.8 kPa

Upper Comfort Foam @ Lumbar 25% IPD 
 

2.5 kPa
1.8 kPa

Lower Comfort Foam @ Head/Feet 25% IPD 
 

1.9 kPa
N/A

Lower Comfort Foam @ Lumbar 25% IPD 
 

1.9 kPa
N/A

Transition Foam 25% IPD 
 

4.8 kPa
6.2 kPa

Support Foam 25% IPD 
 

N/A
N/A

Spring Layer Firmness 
 

Comfort Layer Firmness  

Kirkland Stearns & Foster Pillow Top Lakeridge Comfort Layer Firmness
Sealy Posturepedic Pro Highland Manor Comfort Layer Firmness

Support Layer Firmness  

 Preview Graph
Kirkland Stearns & Foster Pillow Top Lakeridge Support Layer Firmness
 Preview Graph
Sealy Posturepedic Pro Highland Manor 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 
 

76 Pa/mm
61 Pa/mm

Normalized Support Layer Stiffness @ Lumbar 
 

85 Pa/mm
68 Pa/mm

Foam Layer Resilience 
 

Foam Layer Resilience Video  

Quilted Top Fill  

47%
50%

Upper Comfort Foam @ Head/Feet  

48%
5%

Upper Comfort Foam @ Lumbar  

48%
5%

Lower Comfort Foam @ Head/Feet  

6%
N/A

Lower Comfort Foam @ Lumbar  

6%
N/A

Transition Foam  

47%
39%

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 
 

40.0 cm (15.7")
46.0 cm (18.1")

Check Price

California King
Stearns & Foster Pillow Top Lakeridge
Amazon
California King
Posturepedic Pro Highland Manor
Amazon
 
Full
Posturepedic Pro Highland Manor
Amazon
King
Stearns & Foster Pillow Top Lakeridge
Amazon
King
Posturepedic Pro Highland Manor
Amazon
Queen
Stearns & Foster Pillow Top Lakeridge
Amazon
Queen
Posturepedic Pro Highland Manor
Amazon

Kirkland Stearns & Foster Pillow Top Lakeridge

Sealy Posturepedic Pro Highland Manor

Comments

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Kirkland Stearns & Foster Pillow Top Lakeridge vs Sealy Posturepedic Pro Highland Manor: Main Discussion

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