Best Thickness for Memory Foam Mattress 2026 Picks
A thicker foam layer can ease pressure but may not suit every bed. Compare the best thickness for memory foam mattress options for November 2026.
By Lexie Sachs
Updated November 6, 2026
Choosing a thickness that fits your sleep setup
A mattress that feels too thin can leave shoulders and hips pressing hard into the bed, while an overly plush layer may let your middle sink and strain spinal alignment. The best thickness for memory foam mattress depends on whether you need a complete mattress or a comfort layer for an existing one. These picks range from 3-inch toppers to a 14-inch mattress, so the right profile depends on your bed frame, current mattress condition, and preferred feel.
After carefully analyzing the listed product specifications, the options include gel-infused and open-cell foams, a 12-inch mattress with NanoGel foam, and a 14-inch model with seven-zone support. Those details can help you weigh pressure relief, airflow, motion isolation, and support, though product descriptions don’t establish a universal firmness scale score or guarantee a particular pain outcome. A topper can soften a firm, intact mattress, but it won’t fix a collapsed support core. For more position-specific context, see these mattresses for stomach sleepers seeking firmer support and our memory foam comfort guide.
| Award | Product | AMG Score About AMG ScoreThe AMG Score is our own rating from 0 to 10, based on performance, design and build, ease of use, and value. It reflects independent research and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Overall |
SHOUREN 5-Inch Queen Memory Foam Mattress Topper
|
8.8/10 | Buy |
| Best Premium |
Grbsy 14-Inch Queen Memory Foam Mattress
|
8.8/10 | Buy |
| Best Value |
Best Price Mattress 5-Inch Twin Memory Foam
|
8.6/10 | Buy |
| Best Budget |
OLIXIS 3 Inch Queen Memory Foam Mattress Topper
|
8.4/10 | Buy |
Novilla Queen Mattress 12 Inch
|
8.4/10 | Buy | |
EGOHOME 3-Inch Gel Memory Foam Topper
|
8.0/10 | Buy |
SHOUREN 5-Inch Queen Memory Foam Mattress Topper
The SHOUREN 5-Inch Queen Mattress Topper combines cooling gel memory foam with supportive shredded foam to deliver plush contouring and pressure relief over an aging or overly firm mattress. Rated around a plush medium-soft feel, it is an accessible upgrade for side and back sleepers seeking pressure relief around the hips and shoulders.
Pros
- Generous 5-inch thickness delivers deep pressure relief for side and back sleepers experiencing hip or shoulder tenderness.
- Dual-layer structure blends contouring gel foam with shredded foam to avoid bottoming out on firm beds.
- Four sturdy corner anchor straps keep the topper firmly locked onto the base mattress.
- Breathable dot-quilted cover prevents the shredded filling from shifting or clumping over time.
Cons
- Adds significant height (5 inches), which may require extra-deep pocket fitted sheets.
- Requires 24 to 48 hours in a ventilated space to decompress fully and dissipate initial boxed foam odors.
- The plush sink-in profile may feel too soft for dedicated stomach sleepers needing rigid pelvic elevation.
Grbsy 14-Inch Queen Memory Foam Mattress
The Grbsy 14-inch Queen is a high-profile, all-foam mattress engineered with a 4-layer cooling gel and copper foam design rated at a balanced medium-firm feel. Featuring fiberglass-free safety, 7-zone ergonomic contouring, and a washable Ice Silk cover, it is ideal for side, back, and combination sleepers seeking deep pressure relief and motion isolation without trapped heat.
Pros
- Substantial 14-inch multi-layer profile delivers deep pressure cushioning for side and back sleepers
- Certified fiberglass-free flame barrier and CertiPUR-US foams provide safe, healthy indoor air quality
- Removable, machine-washable Ice Silk cover makes routine mattress hygiene and allergen maintenance effortless
- Excellent motion dampening absorbs partner movements to keep sleep undisturbed throughout the night
- Generous 365-night sleep trial and 10-year warranty offer extensive post-purchase protection
Cons
- Packaged shipping weight of nearly 79 pounds makes unboxing and initial bed positioning difficult for one person
- Perimeter edge compresses more when sitting compared to reinforced hybrid innerspring models
- Stomach sleepers over 230 pounds may experience deeper hip sinkage than desired from an all-foam base
Best Price Mattress 5-Inch Twin Memory Foam
Designed with a low-profile build, this twin mattress blends gel-infused memory foam with breathable support for a cooler night of sleep. Its medium-firm feel and slim height make it especially practical for daybeds, trundles, or bunk bed frames.
Pros
- Gel infusion actively helps dissipate body heat
- Targeted pressure relief along hips and shoulders
- Slim 5-inch height fits compact bed setups
- Lightweight construction allows effortless handling
Cons
- Thin 5-inch profile provides limited deep cushioning
- Takes up to 72 hours to expand fully
EGOHOME 3-Inch Gel Memory Foam Topper
Designed to revitalize a firm or aging bed, this 3-inch topper contours closely to the body to ease pressure points while regulating surface temperature. It serves as an accessible comfort upgrade for sleepers seeking plush support backed by certified materials.
Pros
- Conforms well to body curves for pressure relief
- Cooling gel infusion helps reduce heat retention
- CertiPUR-US certified for safe material standards
- Effective at softening firm or aging mattresses
- Includes a 3-year limited warranty
Cons
- Requires 24 to 72 hours for full expansion
- Emits a mild initial off-gassing odor
FAQs
How thick should a memory foam mattress be for pressure relief?
There isn’t one ideal thickness for every sleeper. A 12- or 14-inch mattress provides a full layered sleep system, while a 3-inch topper adds cushioning over an existing mattress. Consider your sleeping position and whether your hips or shoulders need more room to settle without compromising alignment.
Can a 3-inch memory foam topper fix a sagging mattress?
No, a topper cannot repair a collapsed or broken mattress. The OLIXIS topper is described for adding comfort to an existing bed, and its listing specifically says it cannot fix a collapsed mattress. A stable underlying surface matters for support.
Do thicker memory foam mattresses sleep cooler?
Not automatically. The Luxury Upgraded 14 Inch Queen Mattress lists open-cell foam, cooling gel, a graphene-infused cover, and side airflow mesh; the Novilla 12-inch model highlights NanoGel foam and a breathable knit cover. These are manufacturer-described cooling features, not a guarantee that every hot sleeper will stay cool.
Are memory foam mattresses good for couples who wake easily?
Yes, foam can absorb movement, and both the Novilla and Luxury Upgraded mattress descriptions cite motion isolation. All-foam designs may feel less springy than innerspring beds, so consider how easily you want to change positions. See these all-foam and hybrid mattress comfort details for another construction comparison.
How long should a boxed memory foam mattress expand?
Follow the product’s setup directions because expansion times vary. The Best Price Mattress lists up to 72 hours, while Novilla also advises allowing 72 hours; the SHOUREN topper specifies 24 to 48 hours. Give the foam room to expand before covering it.
Which certifications and trial terms should I check?
Check the exact listing for certifications, warranty terms, and return conditions before buying. The supplied details list CertiPUR-US for several foam products, and OEKO-TEX for the Novilla and Luxury Upgraded mattresses. The Luxury Upgraded mattress lists a 365-night trial and 10-year warranty; confirm current terms with the seller.
About the author
Lexie Sachs is a fiber scientist and experienced consumer-product evaluator with more than a decade of expertise reviewing mattresses and sleep products. Her work focuses on comfort, construction, durability, materials, performance and real-world consumer feedback to help shoppers make better-informed sleep purchases.