Panyu King 4-Inch Dual-Layer Memory Foam Mattress Topper

Panyu King Mattress Topper is a 4-inch dual-layer king topper combining a claimed 2-inch cooling gel memory foam base with a 2-inch 3D air-mesh pillow-top cover. The listing describes a medium-firm feel, a deep-pocket fit for mattresses up to 21 inches thick, and a removable washable top layer.

At a glance

Two-layer construction pairs gel memory foam with a breathable 3D air-mesh cover, according to the listing.
The deep-pocket skirt and four corner straps are described as fitting mattresses up to 21 inches thick.
The listing says the removable top layer is machine washable.
Allow 48–72 hours for the topper to expand after unboxing, according to the listing.

Price

$119.98Save 37%

Reference price: ~~$189.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The separate foam and mesh layers provide a distinct combination of cushioning and an airy upper surface.
Four corner straps and a deep-pocket skirt are intended to help keep the topper in place.
A removable, machine-washable top layer makes routine care more manageable.

Cons

The topper is listed as not water resistant, so it is not a substitute for a waterproof mattress protector.

Technical specifications

14 specifications

Identity and sizing
Brand	Panyu
Model	King Mattress Topper
Size	King
Color	White
Firmness	Medium Firm

Materials and protection
Material listed	100％ Polyester
Water resistance listed	Not Water Resistant

Construction and fit
Overall thickness	4 Inch
Foam layer	2-inch cooling gel memory foam
Top layer	2-inch 3D air mesh
Maximum mattress thickness	21”

Care and features
Care instructions	Machine Wash
Special features	Adjustable, Breathable, Deep Pocket, Pillow Top, Washable
Foam certification claim	CertiPUR-US certified

What to know before buying

Listing details to confirm

The listing describes the comfort as both medium-firm and as a choice between plush softness or firm support. It also alternates between a 3D air-mesh layer and a pillow-top cover, while the details list 100％ Polyester and the feature text separately claims CertiPUR-US and OEKO-TEX credentials. Confirm the cover construction, feel options, certifications and selected size with the seller before purchase. The removable washable layer is the top cover, not necessarily the foam core.

What’s in the box

Mattress topperCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

King-bed owners looking to add a 4-inch layered topper to an existing mattress.
Shoppers who want a secured fit with four corner straps and a deep pocket for mattresses up to 21 inches thick.
Buyers who prefer a removable top layer that the listing says is machine washable.

Less suited to

Anyone needing water resistance or a waterproof barrier.
Shoppers who require one unambiguous firmness description or independently confirmed certification details.

Panyu King 4-Inch Dual-Layer Memory Foam Mattress Topper · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 427 ratings

5 stars84%84%
4 stars11%11%
3 stars3%3%
2 stars2%2%
1 star0%0%

Customer feedback highlights reported fit, improved sleep quality, and appearance matching the listing images, with one customer described as reporting relief from back and neck pain. These are customer perceptions rather than guaranteed outcomes. For buyers considering the claimed 4-inch layered build and deep-pocket fit, the positive fit comments are relevant, but they do not establish compatibility with every mattress or confirm cooling performance. Aggregate ratings are mostly at the high end, though they do not explain individual experiences.

Positive themes

Customer feedback describes a good fit and improved sleep quality.
Feedback mentions that the appearance matches the product images.

Frequently asked questions

What are the two layers?

The listing describes a 2-inch cooling gel memory foam base and a 2-inch 3D air-mesh top layer.

Will it fit a thick mattress?

The listing claims a deep-pocket skirt and four corner straps for mattresses up to 21 inches thick.

Can the whole topper be machine washed?

The feature text says the removable top layer is machine washable. It does not say that the foam core is washable.

How long should it expand after unboxing?

The listing advises allowing 48–72 hours for full expansion.

What firmness should buyers expect?

The details list Medium Firm, but the feature description also promotes a choice between plush softness and firm support. Confirm the intended feel before buying.