10 Best mattress topper king sizes of 2026

Save up to 51% off

1

LIANLAM

4 Inch Memory Foam Mattress Topper King Size - 2000 GSM Pillow Top Mattress Topper Extra Thick Support for Back Pain Relief,Breathable Cover with 6"-18" Deep Pocket (King,78"x80")
9.8

Exceptional

Our Rating
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2

MASVIS
MASVIS King Size Dual Layer 4 Inch Memory Foam Mattress Topper, 2 Inch Gel Memory Foam and 2 Inch Cooling Pillow Top Mattress Pad Cover for Back Pain, Medium Support

21% Off
Main highlights

4-Inch Dual Layer Comfort
Combines 2-inch gel memory foam with a 2-inch pillow top for ultimate comfort and support.

Ideal for RVs and Hard Mattresses
Perfect for revitalizing thin RV mattresses or firm beds.

Highly Praised Comfort and Support
Customers love the balance of softness and support, improving sleep quality.
Key specs
- product dimensions:78 x 80 x 16 inches
- color:White
- material:Memory Foam
- size:King
- special feature:Cooling, Quilted
9.7

Exceptional

Our Rating

9.9
materials Quality

9.3
lasts a long time

9.3
worth the money
3

BEDLORE
BEDLORE King Mattress Topper Viscose Derived from Bamboo, Thick Pillow Top Mattress Pad with Stretchable Pockets for 6"-18" Mattress, Soft Breathable Mattress Topper for Back Pain Relief(Dark Gray)

35% Off
Main highlights

Ultimate Comfort and Breathability
Experience luxurious comfort with a breathable design using bamboo viscose and polyester.

Ideal for Sensitive Sleepers
Perfect for those needing comfort and back pain relief.

Secure Fit and Stability
Deep elastic pockets prevent shifting, ensuring a snug fit.
Key specs
- product dimensions:80 x 78 x 18 inches
- color:Dark Gray
- material:Rayon, Polyester
- size:King 78x80
- special feature:Washable
9.6

Exceptional

Our Rating
4

Niagara Sleep Solution

Ultra Soft King Size Mattress Topper - Viscose Made from Bamboo Pillow Top Mattress Pad for Back Pain Relief - Naturally Cooling for Hot Sleepers, Dark Gray

31% Off
9.5

Excellent

Our Rating
5

Sweetcrispy
Sweetcrispy Mattress Topper King, 3 Inch Thick Memory Foam Gel Infused Cooling Toppers Pad for King Size Bed, Sleeper Sofa, RV, Camper, CertiPUR US Certified, Ventilated and Breathable
Main highlights

Enhanced Comfort and Support
The memory foam cradles your body, relieving pressure points for restful sleep.

Versatile Use Across Settings
Ideal for beds, sofas, RVs, providing comfort and support anywhere.

Cooling Gel Infusion
Customers love its ability to regulate temperature and prevent overheating.
9.4

Excellent

Our Rating
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6

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

Superior Softness and Comfort
Made with breathable microfiber fabric, offering exceptional softness and durability.

Ideal for Back Pain Relief
Balances softness and cushioning, alleviating pressure points for better sleep.

Enhanced Mattress Comfort
Customers praise its ability to improve mattress softness and comfort.
Key specs
- product dimensions:80 x 78 x 2 inches
- size:King
- color:White
- material:Polyester
- water resistance:Not Water Resistant
9.3

Excellent

Our Rating

9.7
worth the money

8.4
Gentle

8.0
pain management
7

Niagara Sleep Solution

Ultra Soft King Size Mattress Topper - Viscose Made from Bamboo Pillow Top Mattress Pad for Back Pain Relief - Naturally Cooling for Hot Sleepers, Green

31% Off
9.1

Excellent

Our Rating

9.1
Gentle

8.9
worth the money

8.7
Comfort
8

LIANLAM

LIANLAM 3 Inch Mattress Topper King Size - 1500GSM 3D+7D Down Alternative Fill, Viscose Made from Bamboo Cover, Extra Plush Pillow Top Mattress Topper for Back Pain, 6"-18" Deep Pocket (78"x80")

40% Off
8.9

Very Good

Our Rating
9

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

51% Off
Main highlights

Key Features and Benefits
King-sized, fits up to 16-inch mattresses, durable, soft, breathable, and enhances sleep comfort with quilted fiberfill.

Ideal Use Cases
Perfect for protecting mattresses from stains, enhancing sleep comfort, and for those preferring a soft, breathable sleeping surface.

Customer Reviews Highlight
Most praised for its comfort and softness, significantly improving sleep quality according to customer reviews.
Key specs
- product dimensions:17.8 x 12.8 x 7.5 inches
- size:King
- color:White
- material:Polyester
- water resistance:Not Water Resistant
8.8

Very Good

Our Rating

9.5
Simple to clean

9.3
materials Quality

9.3
Comfort
10

WhatsBedding

WhatsBedding 4 Inch Memory Foam Mattress Topper King Size for Pressure Relief, Extra Soft and Breathable Pillow Top

13% Off
8.7

Very Good

Our Rating

10 Best mattress topper king sizes of 2026

1

4 Inch Memory Foam Mattress Topper King Size - 2000 GSM Pillow Top Mattress Topper Extra Thick Support for Back Pain Relief,Breathable Cover with 6"-18" Deep Pocket (King,78"x80")

How do we rank?

How do we rank?

Analyzing top stores

2

MASVIS King Size Dual Layer 4 Inch Memory Foam Mattress Topper, 2 Inch Gel Memory Foam and 2 Inch Cooling Pillow Top Mattress Pad Cover for Back Pain, Medium Support

9.9

9.3

9.3

3

BEDLORE King Mattress Topper Viscose Derived from Bamboo, Thick Pillow Top Mattress Pad with Stretchable Pockets for 6"-18" Mattress, Soft Breathable Mattress Topper for Back Pain Relief(Dark Gray)

4

Ultra Soft King Size Mattress Topper - Viscose Made from Bamboo Pillow Top Mattress Pad for Back Pain Relief - Naturally Cooling for Hot Sleepers, Dark Gray

5

Sweetcrispy Mattress Topper King, 3 Inch Thick Memory Foam Gel Infused Cooling Toppers Pad for King Size Bed, Sleeper Sofa, RV, Camper, CertiPUR US Certified, Ventilated and Breathable

6

SameBed Mattress Topper 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

7

Ultra Soft King Size Mattress Topper - Viscose Made from Bamboo Pillow Top Mattress Pad for Back Pain Relief - Naturally Cooling for Hot Sleepers, Green

9.1

8.9

8.7

8

LIANLAM 3 Inch Mattress Topper King Size - 1500GSM 3D+7D Down Alternative Fill, Viscose Made from Bamboo Cover, Extra Plush Pillow Top Mattress Topper for Back Pain, 6"-18" Deep Pocket (78"x80")

9

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

9.5

9.3

9.3

10

WhatsBedding 4 Inch Memory Foam Mattress Topper King Size for Pressure Relief, Extra Soft and Breathable Pillow Top

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