10 Best cal king mattress toppers of 2025

Save up to 21% off

Best Choice

1

Sleep Innovations

Sleep Innovations Dual Layer 4 Inch Memory Foam Mattress Topper, California King Size, Ultra Soft Support, 3 Inch Cooling Gel Memory Foam Plus 1 Inch Fluffy Pillow Top Cover
9.8

Exceptional

Our Rating
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Value for Money

2

Sleep Innovations

Sleep Innovations 3 Inch Cooling Gel Infused Memory Foam Mattress Topper, California King Size, Cool Comfort, Medium Support
9.7

Exceptional

Our Rating
3

Serta
Serta ThermaGel Cooling, Pressure-Relieving Memory Foam Mattress Topper, 3 Inch, California King

21% Off
Main highlights

Comfort and Support
Breathable gel infused memory foam engineered for comfort and support, adapts to body contours, enhances sleep surface, and extends mattress life.

Ideal for Cooling Sleep
Perfect for those who overheat at night, thanks to ThermaGel particles providing a cool, comfortable sleep surface. Suitable for various sleeping positions.

Praised Cooling Effect
Customers highly appreciate the cooling properties, noting significant reduction in overheating and improved sleep quality due to optimal temperature regulation.
Key specs
- product dimensions:78 x 47.2 x 7.5 inches
- size:California King
- color:3-inch
- material:Memory Foam
- closure type:Pull On
9.6

Exceptional

Our Rating

9.7
Temperature control

9.3
Gentle

9.3
Easy installation
4

EASELAND
EASELAND California King Mattress Pad Pillow Top Mattress Cover Quilted Fitted Mattress Protector Long Cotton Top 8-21" Deep Pocket Cooling Mattress Topper (72x84 Inches, White)

14% Off
Main highlights

Key Features and Benefits
Ultra-soft 300TC cotton, 30oz down alternative fill, 21-inch deep pocket fitted sheet style, machine washable for easy care.

Ideal Use Cases
Perfect for upgrading firm mattresses, enhancing sleep comfort, and for those seeking a breathable, skin-friendly sleeping surface.

Customer Reviews Highlight
Most praised for its ability to stay in place all night, providing a consistently neat and comfortable sleeping experience.
9.3

Excellent

Our Rating

9.5
Simple to clean

9.1
lasts a long time

8.9
Gentle
5

Milcabe

3 Inch Ultra-Fluffy Memory Foam Mattress Topper Cal King for Back Pain, Extra Soft Pillow Top Cal King Mattress Topper with 4X Support, Mattress Pad with Breathable Air Mesh Sides, 6-21'' Deep Pocket
9.2

Excellent

Our Rating
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6

Linenspa

LINENSPA Memory Foam Mattress Topper - 2 Inch Gel Infused Memory Foam - Plush Feel - Cooling and Pressure Relieving - CertiPUR Certified - Dorm Room Essentials - California King Size
9.1

Excellent

Our Rating

9.3
Light weight

9.1
lasts a long time

8.9
Support
7

MATBEBY
MATBEBY California King Mattress Pad - Cooling Breathable Mattress Topper, Quilted Fitted Mattress Protector, Pillow Top Mattress Cover with 8-21" Deep Pocket, Soft, Machine Washable, White, Cal King
Main highlights

Key Features
Soft, breathable microfiber top layer with unique 3D+6D filling for a comfortable sleep. Quilted design, deep pocket fit, machine washable.

Ideal Use Cases
Perfect for enhancing sleep comfort on any mattress, ideal for hot sleepers and those seeking a cooler, more breathable sleeping environment.

Customer Reviews
Highly praised for its cooling effect, softness, and ability to stay in place, enhancing overall sleep quality.
Key specs
- product dimensions:84 x 72 x 21 inches
- size:California King
- color:White - Checkered
- material:Microfiber
- water resistance:Not Water Resistant
9.0

Excellent

Our Rating

9.5
quality of sleep

9.3
Thickness

9.1
Gentle
8

SameBed

SameBed Mattress Topper Cal King,Extra Thick Mattress Pad Cover for Back Pain,Cooling Mattress Protector with 8-21 Inch Deep Pocket,Overfilled Down Alternative Filling
8.9

Very Good

Our Rating

9.7
worth the money

8.4
Gentle

8.0
Comfort
9

WhatsBedding

WhatsBedding Memory Foam Mattress Topper California King, Pressure-Relieving Cooling Mattress Pad with Secure Strap Design for Back Pain, Soft and Supportive Bed Topper
8.6

Very Good

Our Rating
10

Utopia Bedding
Utopia Bedding Quilted Fitted Mattress Pad, California King Size, Elastic Fitted Mattress Topper Protector and Cover Stretches up to 16 Inches Deep, Machine Washable (White)

21% Off
Main highlights

Soft and Comfortable
This super soft quilt with fiberfill has additional loft that provides extra comfortable sleep and protection. The elastic all around secures the pad into position.

Ideal for Non-Waterproof Needs
Perfect for those seeking a comfortable, breathable, and high-quality mattress pad without the need for waterproofing or spill-proof features.

Praised for Comfort and Fit
Customers appreciate the soft, comfortable feel and the secure fit of the mattress pad, which accommodates deep mattresses well.
Key specs
- product dimensions:84 x 72 x 16 inches
- size:King California
- color:White
- material:Polyester
- water resistance:Not Water Resistant
8.5

Good

Our Rating

9.9
Comfort

9.5
Simple to clean

9.3
materials Quality

10 Best cal king mattress toppers of 2025

1

Sleep Innovations Dual Layer 4 Inch Memory Foam Mattress Topper, California King Size, Ultra Soft Support, 3 Inch Cooling Gel Memory Foam Plus 1 Inch Fluffy Pillow Top Cover

How do we rank?

How do we rank?

Analyzing top stores

2

Sleep Innovations 3 Inch Cooling Gel Infused Memory Foam Mattress Topper, California King Size, Cool Comfort, Medium Support

3

Serta ThermaGel Cooling, Pressure-Relieving Memory Foam Mattress Topper, 3 Inch, California King

9.7

9.3

9.3

4

EASELAND California King Mattress Pad Pillow Top Mattress Cover Quilted Fitted Mattress Protector Long Cotton Top 8-21" Deep Pocket Cooling Mattress Topper (72x84 Inches, White)

9.5

9.1

8.9

5

3 Inch Ultra-Fluffy Memory Foam Mattress Topper Cal King for Back Pain, Extra Soft Pillow Top Cal King Mattress Topper with 4X Support, Mattress Pad with Breathable Air Mesh Sides, 6-21'' Deep Pocket

6

LINENSPA Memory Foam Mattress Topper - 2 Inch Gel Infused Memory Foam - Plush Feel - Cooling and Pressure Relieving - CertiPUR Certified - Dorm Room Essentials - California King Size

9.3

9.1

8.9

7

MATBEBY California King Mattress Pad - Cooling Breathable Mattress Topper, Quilted Fitted Mattress Protector, Pillow Top Mattress Cover with 8-21" Deep Pocket, Soft, Machine Washable, White, Cal King

9.5

9.3

9.1

8

SameBed Mattress Topper Cal King,Extra Thick Mattress Pad Cover for Back Pain,Cooling Mattress Protector with 8-21 Inch Deep Pocket,Overfilled Down Alternative Filling

9.7

8.4

8.0

9

WhatsBedding Memory Foam Mattress Topper California King, Pressure-Relieving Cooling Mattress Pad with Secure Strap Design for Back Pain, Soft and Supportive Bed Topper

10

Utopia Bedding Quilted Fitted Mattress Pad, California King Size, Elastic Fitted Mattress Topper Protector and Cover Stretches up to 16 Inches Deep, Machine Washable (White)

9.9

9.5

9.3

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