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
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.
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 hands-on testing and verified specs, 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?
All conduct/absorb heat to different degrees: gel absorbs then saturates, copper and graphite keep conducting. Copper sits between plain gel and Saatva's graphite in our warm-night testing.
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.