9 Best Costco Mattress Toppers of 2026

Novaform is the topper brand Costco stocks most, and the ComfortLuxe Plus is its best-documented model. It is a 3-inch layer of phase change gel memory foam inside a stretch cover woven with cool-touch fibers. Costco's listing says the cover stretches like a fitted sheet over mattresses up to 17 inches deep and can go through the washer and dryer, which removes the usual hassle of spot cleaning a foam topper. The foam is CertiPUR-US certified and made in the USA, and the topper carries a 10-year limited warranty. Novaform describes it as suited to side, back and stomach sleepers. It was listed at $159.99 for a queen on costco.com on November 11, 2026, and its queen listing showed 4,022 reviews averaging 4.4 out of 5, the most of any topper in that range. The trade-off is a classic slow memory foam feel; people who want bounce should look at the Dormeo.

Serenity by Tempur-Pedic is the line Tempur-Pedic sells through Costco, and this 3-inch memory foam topper is the plain version without the cooling cover. Costco's listing says the foam adapts to your weight, shape and temperature, minimizes pressure points and reduces motion transfer so a partner's movement is less likely to wake you. The queen measures 80 by 60 by 3 inches and weighs 27.5 lbs, and the cover fits mattresses up to 17 inches deep and can be machine washed in cold water. It is made in the USA of domestic and imported components. Costco listed the queen at $159.99 on November 11, 2026, the same price as the Novaform ComfortLuxe Plus, and its queen listing showed 1,997 reviews averaging 4.2 out of 5. The listing does not state a warranty term, which is the main gap against Novaform's 10-year limited warranty.

The Advanced Cooling model is the topper to pick at Costco if heat is the main complaint about your bed. Novaform coats the 3-inch gel memory foam with phase change material under what it calls the PerfectTemp system, and wraps it in a cool-touch, moisture-wicking stretch cover. As with the ComfortLuxe Plus, the cover is washable and fits mattresses up to 17 inches deep, the foam is CertiPUR-US certified and made in the USA, and the topper carries a 10-year limited warranty. The queen measures 80 by 60 by 3 inches and weighs 28.7 lbs. Costco listed it at $169.99 for a queen on November 11, 2026, $10 more than the ComfortLuxe Plus. It has a much shorter review record, 157 reviews averaging 4.2 out of 5 on the queen listing, so the ComfortLuxe Plus remains the safer default for people who do not sleep hot.

This Serenity by Tempur-Pedic topper splits its 3 inches into two layers: 2 inches of memory foam with a 1-inch fiber fill pillowtop above it. That gives a softer, quilted first touch than the all-foam models, with memory foam underneath for contouring. Costco listed the queen at $144.99 on November 11, 2026, $15 below the 3-inch Serenity, and the queen listing showed 2,349 reviews averaging 4.4 out of 5, the highest score among the Tempur-Pedic toppers on Costco's queen page. The catch is documentation: Costco's listing gives the layer build in the name but publishes little else, with no weight, cover details or warranty term, so ask Tempur-Pedic at its listed customer line before you buy if those matter. With only 2 inches of foam it suits people who want softness more than people who need support for a sagging mattress.

Sealy's Posturepedic name is built around support, and this Costco topper brings a zoned layout to 3 inches of memory foam. Costco's listing confirms the 3-inch zoned memory foam build, a cover that can be machine washed in cold water and tumble dried on low, and six sizes from Twin to Cal King. The queen weighs 18 lbs, about 10 lbs lighter than the Novaform and Serenity queens, which points to lighter foam but makes it easier to lift and fit. Costco listed the queen at $139.99 on November 11, 2026, $20 below the ComfortLuxe Plus. The listing is thin on detail: it does not explain where the zones sit, give a foam density or state a warranty. Its 4.4 out of 5 rating comes from only 64 reviews, so it has a shorter track record than the Novaform and Tempur-Pedic picks.

Boyd Sleep's topper is the budget foam pick on Costco's site. It uses what Boyd calls GelLux technology, liquid gel fused into a high-performance foam, cut into a multi-zone wave pattern with circular channels that the listing says add lumbar support and reduce motion transfer. Air hole perforations run through the foam to help heat escape. The foam is CertiPUR-US certified and carries a 5-year manufacturer warranty. Costco listed the queen at $104.99 on November 11, 2026, $35 less than the Sealy and $55 less than the ComfortLuxe Plus. Two details need attention before buying: the queen measures 58 by 78 inches, a little short of a standard 60 by 80 inch mattress, and there is no cover, so the foam can only be spot cleaned with water. Its 966 reviews averaged 4.0 out of 5 on the queen listing.

Dormeo builds this topper differently from everything else on Costco's shelf. Instead of a single sheet of foam it uses Octaspring units, foam springs that each move independently, arranged in zones that are firmer under the middle of the body and gentler under the shoulders and legs. Dormeo says the structure pushes out body heat and draws in fresh air as you move, and describes the feel as medium. The interior combines memory foam and poly foam, the queen is 3 inches thick and weighs 27 lbs, and the cover is removable and machine washable but should be laid flat to dry. The cost is the drawback: Costco listed the queen at $314.99 on November 11, 2026, about twice the price of the Novaform and Serenity foam toppers. Its 980 reviews averaged 4.4 out of 5 on the queen listing.

Hotel Grand is the option for members who want a softer, cleaner sleeping surface rather than a structural fix. The topper is filled with 100% polyester inside a 233 thread count cotton cover, with 2-inch gusseted sidewalls that keep the fill even and a 16-inch stretch skirt that holds it on mattresses up to 18 inches deep. It is hypoallergenic, and the whole topper can be machine washed in cold water and tumble dried on low, though the maker asks for large capacity machines. The queen weighs just 5 lbs. Costco listed it at $54.99 on November 11, 2026, about a third of the price of the foam toppers above. The trade-off is support: fiber fill compresses, so it will not fill a dip in a sagging mattress the way 3 inches of foam can. Its 176 reviews averaged 4.0 out of 5 on the queen listing.

Feather & Loom's topper is Costco's down option. It has two chambers: white goose down on top for loft and goose feather underneath for medium support, inside a 500 thread count cotton dobby cover with a 3-inch gusset. It is overfilled, rated at 600 fill power and certified for responsible down sourcing, and a waterproof barrier sits inside. Costco listed the queen at $114.99 on November 11, 2026. Two limits stand out. The dual-chamber stretch skirt fits only mattresses from 18 to 21 inches deep, so it suits thick pillowtop and hybrid beds and will be loose on thinner ones. And the listing offers Queen, King and Cal King only. Down and feather toppers also shift and need shaking out, which is why it scores lower on ease of use. Its 542 reviews averaged 4.0 out of 5 on the queen listing.