WhatsBedding 5 Inch Memory Foam King Mattress Topper - Soft Breathable

In this review of the WhatsBedding 5 Inch Memory Foam King Mattress Topper, the bottom line is simple: it is for sleepers who want to add substantial cushioning and temperature regulation to a firm mattress without replacing it. The topper pairs a thick 5 in memory foam pillow layer with a 100% cotton top and box quilting to keep fill in place. Reviewers found it noticeably softer than a bare mattress, comfortable for side, back or stomach sleepers, and useful year round thanks to breathable construction that helps wick moisture and reduce overheating.

Key Features

• 5 in thickness: Provides deep cushioning that softens very firm mattresses and improves pressure relief for hips and shoulders.
• 100% cotton top: A natural, breathable surface that feels soft against skin and helps wick away sweat during sleep.
• Breathable design: Surface ventilation and materials distribute heat to reduce hot spots and help keep sleepers cool and dry.
• Box quilted construction: Quilted boxes secure the fill so padding stays evenly distributed and resists shifting over time.
• Elastic corner straps: Four elastic straps help keep the topper stable on the mattress for a better fit on thicker beds.

Who It's For

This topper is best for people who sleep on a very firm mattress and want to add significant softness without buying a new mattress; it is also a good choice for mixed-position sleepers who need both cushioning and support. It suits those who prefer natural fiber surfaces because of the 100% cotton top and for anyone looking to reduce the hot feeling some memory foams produce, thanks to the breathable surface.

Those who need an ultra-thin protector, specialized orthopedic support with zoned firmness, or a fully removable, machine-washable encasement may want to consider other products. Also, sleepers who require very rigid mattress stability should note a topper adds softness and slight change in mattress feel.

Pros & Cons

Pros

• Noticeably improves comfort and softness on firm mattresses, making it easier to sleep through the night.
• The 100% cotton top and ventilated surface help wick moisture and reduce overheating for most sleepers.
• Box quilting keeps the soft filling from shifting, maintaining even support across the bed.
• Four elastic straps provide a better fit on thicker mattresses and help with stability.

Cons

• Because it is thick memory foam, some users may still notice a slight warm feel compared with thinner, more ventilated toppers.
• Not a substitute for a fully encased, machine-washable mattress protector if complete washability is required.

Specifications

Our Verdict

The WhatsBedding 5 Inch Memory Foam King Mattress Topper is a strong value for anyone wanting to soften a firm mattress and gain better pressure relief without a full replacement. Its 5 in foam and cotton top balance cushioning and breathability, and box quilting with straps keeps the topper in place. It is recommended for side, back, and stomach sleepers seeking comfort and cooling benefits, though buyers who need machine-washable encasements should look elsewhere.

Frequently Asked Questions

Will this topper fit on a thick mattress?
Yes; it includes four elastic corner straps to secure the topper on thicker mattresses and help maintain placement.

Is the top washable?
The 100% cotton top provides a breathable surface but the product is not described as a fully removable machine-washable encasement.

Does it reduce heat from memory foam?
The ventilated surface and cotton top help distribute heat and wick moisture, reducing the hot feeling common with some memory foam products.