OhGeni Full Mattress Topper, 4-Inch Dual Layer

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Product guide

OhGeni Full Mattress Topper, 4-Inch Dual Layer

Dual Layer: The OhGeni mattress topper combines a 2-inch gel memory foam base with a separate 2-inch pillow-top pad for a softer surface over an existing full-size mattress. Its listing describes a removable, machine-washable pillow-top cover and an elastic skirt for mattresses up to 19 inches thick.

At a glance

Two separate layers add up to the listed 4-inch thickness. The foam base and pillow-top pad are not stitched together.
The listing says the pillow-top cover is removable and machine washable, and gives cold, gentle-cycle washing and low-heat tumble-drying directions.
An elastic deep-pocket skirt is claimed to fit mattresses up to 19 inches thick.
This is a topper for an existing mattress, not a standalone mattress.
The listing claims CertiPUR-US certification for the foam, OEKO-TEX Standard 100 textiles, and a 10-year warranty. Check the selected offer for applicable terms.

Price

$49.99Save 37%

Reference price: ~~$79.98~~

Price checked: Nov 14, 2026

View offer

Pros and cons

Pros

Separate foam and pillow-top layers allow the top pad to be removed for washing or adjusted independently.
The soft, 4-inch layered construction is intended to add cushioning to a firm mattress.
A machine-washable removable top cover can make routine care more practical.

Cons

The topper is not water resistant, according to the listed specification.
Its soft, thick build may not suit buyers seeking a firmer mattress surface.

Technical specifications

15 specifications

Identity and size
Brand	OhGeni
Model	Mattress toppers
Listed size	F(75"L × 54"W ×4"Th)
Listed weight	15.8 pounds
Color	4" (Pad + Topper) White

Construction and materials
Materials listed	Fill: 100% Polyester, Cover: 64% Polyester, 36% Polyethylene
Foam and pad construction	2" cooling gel-infused memory foam base with a 2" breathable cooling fabric pillow top
Listed firmness	Soft
Listed features	Breathable, Cooling, Deep Pocket, Pillow Top
Water resistance listed	Not Water Resistant

Fit, care and use
Maximum mattress thickness claimed	up to 19" thick
Care listed	Machine Wash
Closure type	Pull On
Age range	Adult
Number of items	1

What to know before buying

Listing details to confirm

The listed full size is 75 by 54 inches, but customer feedback reports fit and coverage problems, including claims that it does not cover the whole mattress and may feel closer to twin size. Measure your mattress and confirm the selected listing's dimensions before ordering. Customer feedback also reports mixed cooling results and concerns about foam cracking within a month, while the listing itself claims cooling materials and a 10-year warranty. These reports do not establish how an individual unit will perform. Allow at least 24 hours for expansion after unpacking, as the listing instructs.

What’s in the box

Included

Mattress topper

Who is it for?

A good fit for

People looking to soften an existing firm full-size mattress with layered cushioning.
Buyers who prefer a separate, removable pillow-top layer and a machine-washable cover.
Shoppers whose mattress thickness falls within the claimed 19-inch skirt limit.

Less suited to

Anyone seeking a standalone mattress or a water-resistant topper.
Buyers who need consistently effective cooling or long-term durability assurances, given mixed customer feedback.
Anyone who needs a firm sleeping surface.

OhGeni Full Mattress Topper, 4-Inch Dual Layer · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 1,131 ratings

5 stars71%71%
4 stars10%10%
3 stars7%7%
2 stars4%4%
1 star8%8%

Customer feedback highlights comfort and softness, with reports of a cushioned feel and some customers saying they wake without pain. Cooling experiences vary. Feedback also raises practical concerns about coverage and fit, along with reports of foam cracking within a month. These concerns matter for a layered topper whose listing dimensions are full size and whose foam is marketed for cooling. Aggregate ratings lean positive overall, but do not resolve the reported fit, cooling or durability concerns.

Positive themes

Customers describe the topper as comfortable and soft, and some report improved comfort on waking.

Negative themes

Feedback reports incomplete mattress coverage and size that some customers say feels closer to a twin.
Some customers report that the memory foam cracked within a month.

Mixed feedback

Cooling feedback is mixed, with some customers finding it cool and others saying it does not cool effectively.

Frequently asked questions

Is this a mattress or a topper?

It is a topper intended to sit on an existing mattress, not a standalone mattress.

What makes up the 4-inch thickness?

The listing describes a 2-inch gel memory foam base and a separate 2-inch pillow-top pad. They are not stitched together.

Can the cover be washed?

The listing says the pillow-top cover is removable and machine washable. It recommends cold water on a gentle cycle and tumble drying on low.

Will it fit my full-size mattress?

The listing gives dimensions of 75 by 54 inches and claims the skirt fits mattresses up to 19 inches thick. Customer feedback raises concerns about coverage and fit, so compare the listed measurements with your mattress.

Does it reliably keep sleepers cool?

The listing describes cooling materials, but customer feedback on cooling is mixed. The materials claim does not guarantee a cooling result for every sleeper.