Novaform ComfortGrande Plus 14" -- Best Overall
The ComfortGrande Plus is the most consistently praised mattress in Costco's lineup. The 14-inch profile uses a gel-infused memory foam top layer over a firm supportive base, which strikes a balance most sleepers find comfortable right away. Side sleepers especially benefit from the pressure relief at the shoulder and hip. The foam density is high enough to resist sagging over several years, which is the main concern with budget foam beds. It sleeps cooler than older memory foam designs thanks to the gel infusion. At for a queen, it undercuts comparable foam mattresses from Casper or Purple by a significant margin.
The best Costco mattresses in 2026, covering foam, hybrid, and innerspring options with strong support, durability, and warehouse-level pricing you can count on.
Costco is one of the few retailers where you can buy a quality mattress at a significantly lower price than specialty sleep stores. Between the Novaform in-house brand and periodic offerings from premium brands, the selection changes but usually covers foam, hybrid, and traditional innerspring options. Knowing which models consistently deliver the best sleep is the challenge.
| Product | Best For | Rating |
| — | — | — |
| Novaform ComfortGrande Plus 14″ | Side sleepers | 4.7/5 |
| Novaform Ever5 Hybrid 12″ | Combo sleepers | 4.6/5 |
| Kirkland Signature Plush Euro Top | Budget innerspring | 4.3/5 |
| Stearns and Foster Estate | Luxury support | 4.8/5 |
| Novaform SoFresh 10″ | Guest rooms | 4.2/5 |
How we test
We compare every pick against the field on real specifications, certifications, and aggregated owner reviews. We do not take payment for placement, and we flag when a product is older or sold mainly through renewed listings.
At a glance
| Pick | Best for | Score | |
|---|---|---|---|
| Novaform ComfortGrande Plus 14" -- Best Overall | Check price | ||
| Novaform Ever5 Hybrid 12" -- Best Hybrid | Check price | ||
| Kirkland Signature Plush Euro Top -- Best Budget Innerspring | Check price | ||
| Stearns and Foster Estate -- Best Luxury Pick | Check price | ||
| Novaform SoFresh 10" -- Best for Guest Rooms | Check price |
The picks, reviewed
Novaform ComfortGrande Plus 14" -- Best Overall
The ComfortGrande Plus is the most consistently praised mattress in Costco's lineup. The 14-inch profile uses a gel-infused memory foam top layer over a firm supportive base, which strikes a balance most sleepers find comfortable right away. Side sleepers especially benefit from the pressure relief at the shoulder and hip. The foam density is high enough to resist sagging over several years, which is the main concern with budget foam beds. It sleeps cooler than older memory foam designs thanks to the gel infusion. At for a queen, it undercuts comparable foam mattresses from Casper or Purple by a significant margin.
Novaform Ever5 Hybrid 12" -- Best Hybrid
The Ever5 Hybrid combines foam comfort layers with a pocketed coil core, giving it the pressure relief of foam with better edge support and airflow than all-foam models. Back and stomach sleepers who find pure foam too soft will appreciate the firmer feel of the coil base. Motion transfer is low for a hybrid. The 12-inch height fits most standard bed frames without issue. This model is a strong step up from the all-foam Novaform line for those who want a more traditional feel without paying luxury prices.
Kirkland Signature Plush Euro Top -- Best Budget Innerspring
Costco's Kirkland Signature mattress is made by established manufacturers and priced aggressively for members. The Euro top layer adds a soft surface feel over a traditional innerspring core. It is a more conventional mattress than the foam Novaform options, which makes it a good fit for people transitioning from older spring-based beds who are not yet ready for memory foam. Edge support is better than most foam models in this price range. The plush top can feel slightly warm compared to hybrid options.
Stearns and Foster Estate -- Best Luxury Pick
When Costco stocks Stearns and Foster or similar premium brands, the pricing is meaningfully lower than department stores or dedicated mattress retailers. The Estate line uses individually wrapped coils with a cashmere-blend quilt top for a luxurious feel that remains supportive. It is worth checking your local warehouse or Costco.com periodically, as these premium offerings come and go. For buyers who want a high-end mattress without the markup of a specialty showroom, this is the model to watch for.
Novaform SoFresh 10" -- Best for Guest Rooms
The SoFresh is Novaform's most affordable option, and it shows -- but in a good way for its intended use. A 10-inch profile with a firm foam base is perfectly adequate for occasional guests or a secondary bedroom. It arrives compressed in a box, which makes shipping and setup simple. It is not the right choice for a primary bed where you sleep every night, but for a guest room that sees use a few times a year, the price-to-performance ratio is hard to beat.
What to look for
What to consider
Costco's mattress selection varies by season and warehouse location, so check Costco.com before visiting in person. Decide your sleep position first: side sleepers benefit from softer foam, back sleepers do better on medium-firm hybrid or innerspring, and stomach sleepers need firm support to prevent lower back strain. Consider your body weight too -- heavier sleepers need denser foam or stronger coil support to avoid premature sagging. Costco's return policy removes most of the risk, so do not be afraid to try a model even if you cannot test it in a store first.
What to consider
For related picks, see our [best mattress toppers](/articles/best-mattress-toppers) and [best bed frames for heavy mattresses](/articles/best-bed-frames-heavy-mattress). Learn how we evaluate products at [/methodology](/methodology).
FAQs
Costco carries a mix of house brands like Novaform and Kirkland alongside name brands like Stearns and Foster or Tempur-Pedic at member pricing. The Novaform line in particular offers solid foam construction at prices well below specialty retailers, making it a good value choice for budget-conscious buyers who want reliable support.
Costco has one of the most generous return policies in retail. Mattresses fall under their satisfaction guarantee, which means you can return them at any point if you are not satisfied. This removes much of the risk from buying a mattress without testing it in a store for an extended period, which is a major advantage over other online mattress retailers.
