- Thickness
- 3 inches
- Material
- Gel-infused memory foam, CertiPUR-US certified
- Size priced
- Queen (every price and rating below is for the Queen size)
- Density
- 2.8 lb per cubic foot, per the listing on Target.com
- Cover
- 57% polyester, 40% viscose from bamboo, 3% spandex, zippered and removable
- Care
- Machine wash and tumble dry the cover; allow the foam 24 to 72 hours to decompress before use, per LUCID
- Warranty
- 3-Year Limited Warranty, per LUCID's product page
- Fits mattresses up to
- 16 inches deep, per Target's listing
LUCID
LUCID 3" Cooling Gel Memory Foam Mattress Topper
A budget gel memory foam layer that softens a too-firm mattress without a big price tag.
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All prices
| Store | Price | Checked | |
|---|---|---|---|
| Walmart Best price | $99 | ✓ AUG 30 | Go to store |
| Target | $147.99 | ✓ AUG 30 | Go to store |
Prices were checked on the dates shown and can change at any time. The store page is always authoritative. Shipping and taxes are not included.
First verified Aug 30, 2026. When a later check finds a different price, it gets logged here.
Our verdict
Where it wins
- Gel infusion takes some of the heat retention out of plain memory foam
- Removable, machine-washable cover instead of a spot-clean-only shell
- CertiPUR-US certified foam
- The cheapest of the four toppers in this roundup at its lowest verified price
Where it loses
- 2.8 lb density is on the low end for memory foam, so it will not hold its shape as long as a denser topper
- Only a 3-year warranty, shorter than every other topper in this comparison
- Deep, plush sink feel that stomach sleepers and firm-mattress fans may not like
The LUCID 3-inch gel topper is a low-cost way to take the edge off a firm mattress or extend the life of an old one. The gel infusion and washable cover are real conveniences, but the foam is lower density than the ViscoSoft topper in this roundup, so it will not last as many years or feel as substantial. It is a reasonable pick for a guest room, a dorm, or anyone testing whether a topper helps before spending more, not for someone who wants a topper to last a decade.
Also in mattress toppers
Sleep Innovations Cooling Comfort Dual Layer Mattress Topper
A pillow-top style topper that pairs a plush fiberfill layer with gel memory foam underneath instead of a single foam slab.
Tempur-Pedic TEMPUR-Adapt Topper
The brand-name pick, built from Tempur-Pedic's proprietary foam and priced well above the generic gel toppers.
ViscoSoft Select High Density 3" Memory Foam Mattress Topper
A higher-density gel memory foam topper built as a single block for consistent edge support.
More on the LUCID 3" Cooling Gel Memory Foam Mattress Topper
Common questions
Does the LUCID gel topper sleep hot?
It sleeps cooler than plain memory foam because of the gel infusion, but it is still memory foam, so it will not feel as cool as an all-latex or coil-based topper.
How long does it take to expand after unboxing?
LUCID recommends letting it decompress for 24 to 72 hours before sleeping on it, and a faint new-foam smell during that window is normal.
Can you wash the whole topper?
No. Only the zippered cover is machine washable. The foam core itself should not be washed.
Is 2.8 lb density good for a memory foam topper?
It is on the lighter end. Higher-density toppers, generally 3 lb per cubic foot and up, tend to hold their shape longer and feel more substantial, but they also cost more.
Prices last verified Aug 30, 2026.