MATTRESS TOPPERS·SUBRTEX
SUBRTEX 3-Inch Copper Gel Memory Foam Topper
4.4 · 5,200 reviews
Editor score7.6/10
Best for: Infusion-curious hot sleepers, fresh-bed feel
Lowest price we found↓ $19.00 vs list
$56.99$75.99 list
At Amazon · checked 2026-08-09
Buy at Amazon · $56.99 ↗Updated 2026-07-03
Thickness
3 inches
Material
Copper-gel memory foam
Cooling
Copper conduction + gel
The copper-infusion angle — gel foam with copper particles for heat conduction and freshness claims, at a modest premium over plain gel.
We'd skip$56.99 for the lowest score in the topper category. Copper infusion has no published effect on how a topper sleeps.Copper is the infusion-tier trend with the most substance: it conducts heat better than gel alone and carries antimicrobial properties textile brands love to cite. SUBRTEX pairs a copper-gel comfort layer with solid density and a washable cover. We rate the cooling as real-but-incremental over plain gel; the freshness angle is a bonus, not a reason to buy.
Price across 3 retailers
Prices checked 2026-07-03Prices shown were last checked on 2026-07-03and can change at any time — the price on the retailer's site at checkout is the one that applies. As an Amazon Associate and affiliate we may earn a commission on purchases made through these links, at no extra cost to you.
How our prices work
We show the lowest price we found at our last check (2026-07-03) and the manufacturer's list price for comparison. Retail prices — Amazon's especially — move constantly, so treat these as a guide: the price shown on the retailer's own page at checkout is the one that applies. Tap through to see each retailer's current price.
Should you buy it?
What we like
- Copper conduction beats plain gel
- Washable cover included
- Solid mid-tier density
- Freshness bonus from copper
What to know before buying
- Cooling gain is incremental, not dramatic
- Premium over identical-feel gel foams
- Copper marketing outruns the physics
At a glance
Thickness3 inches
MaterialCopper-gel memory foam
CoolingCopper conduction + gel
CoverIncluded, washable
Firmness feelMedium
AntimicrobialCopper's textile property
WarrantyBrand standard
Best forCopper-tier cooling
CareCover machine-washes
How it scores
How our 7.6/10 breaks down — rated on the dimensions that matter most for mattress toppers, from published specifications and third-party test data, not the marketing.
Comfort
7.5/10
Cooling
7.5/10
Support
7.5/10
Durability
7.5/10
Value
8/10
Compare with alternatives
Quick verdicts for the mattress toppers most often considered alongside the SUBRTEX 3-Inch Copper Gel Memory Foam Topper.
VS·HEAD-TO-HEAD
SUBRTEX 3-Inch Copper Gel Memory Foam Topper vs Saatva Graphite Memory Foam Topper
The luxury cooling topper — graphite-infused memory foam that pulls heat away, from the brand whose mattress tops our rankings.
→ Hot-sleeping pressure-relief seekers, premium buyers
VS·HEAD-TO-HEAD
SUBRTEX 3-Inch Copper Gel Memory Foam Topper vs Bedsure 3-Inch Gel Memory Foam Topper
The value 3-incher with a cover — gel foam plus a removable washable bamboo-feel cover the budget kings make you buy separately.
→ Covered convenience at value price
VS·HEAD-TO-HEAD
SUBRTEX 3-Inch Copper Gel Memory Foam Topper vs Lucid 3-Inch Gel Memory Foam Topper
The best-selling gel topper on Amazon — 80% of the Tempur experience for a quarter of the price.
→ Budget pressure relief, hot-sleeper foam feel
Decision support · what no other comparison site has
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More mattress toppers we compared
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Frequently asked questions
Copper vs graphite vs gel?
The materials behave differently: gel absorbs heat and then saturates, while copper and graphite keep conducting it away. What that means for any particular topper depends on how much of the material is in the foam, how dense the foam is, and what the cover is made of — so we cannot rank these three against each other without measurements that compare the finished products, and we have not found any.
Antimicrobial claims real?
Copper's antimicrobial effect is documented in textiles; in a covered topper it's a hygiene bonus, not a health feature.
Worth it over Lucid gel?
If warm nights are your constant complaint, the ~$20 step up earns itself; otherwise plain gel does the job.
Cover included?
Yes — washable, which budget bare-foam rivals skip.
Affiliate disclosure: SleepyHero earns a small commission when you buy through these links. It doesn't cost you extra. Reviews and rankings are editorial — we don't accept payment for placement.