Sealy Posturepedic 3" Zoned Memory Foam Mattress Topper review

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.

Who it is for

Back sleepers who want a zoned foam topper for under $150

Price

See vendor pricing (USD check pending).

US price check pending. See the vendor pricing page.

Key features

• 3-inch zoned memory foam
• Machine washable cover
• Twin, Twin XL, Full, Queen, King and Cal King sizes
• Queen weighs 18 lbs
• Queen listed at $139.99 on costco.com when checked

Strengths and weaknesses

• Strength: Cheapest 3-inch foam topper from a major mattress brand on this list
• Strength: Rated 4.4 out of 5 on Costco, though from only 64 reviews
• Strength: Lighter than the Novaform and Serenity toppers, so easier to move
• Weakness: Costco's listing does not say how the zones are arranged
• Weakness: No warranty term on the listing
• Weakness: Made in China, while Novaform and Serenity foam is made in the USA

Key facts

• Thickness: 3 in
• Queen weight: 18 lbs
• Queen price on costco.com: $139.99 when checked
• Costco rating: 4.4 of 5 (64 reviews)

Where it ranks

Sealy Posturepedic 3" Zoned Memory Foam Mattress Topper is No. 5 in our Best Costco Mattress Toppers verdict.