Costco Mattress Reviews (2026)

Novaform is the strongest choice for side sleepers and anyone who wakes when a partner moves. Its foam cushioned the shoulders and hips better than the other three mattresses and kept movement close to its source. The trade-off is a softer edge and more resistance when you roll over.

Casper Cooling Select is the safest all-around recommendation for couples with different preferences. It relieved pressure without trapping us in the foam, stayed cooler than the other models, and made position changes easy. Light coil bounce remains, but it is far less distracting than the movement we noticed on the two innerspring beds.

Sealy Ridge Crest II Firm is the better fit for sleepers who want a traditional, supportive surface. Its reinforced center and stable perimeter worked especially well for back and stomach sleeping. Side sleepers who need more give should consider the separately sold Plush Pillow Top rather than treating these firm-model scores as interchangeable.

Kirkland Lakeridge earned the highest overall score because its pillow top adds useful cushioning without weakening the support underneath. It had the most secure edge and the strongest support in the group. Choose it over Sealy when you want a more finished pillow-top feel; choose Sealy when a firmer surface and lower profile matter more.

Overnight use was paired with the same repeatable mattress testing process for each model. We rated perceived firmness on a 10-point scale, measured center and edge compression under a 44-pound load, and timed responsiveness by how quickly the surface recovered 90% of its height after the load was removed. For motion isolation, a 10-pound medicine ball was dropped from 6 inches with an accelerometer 12 inches away; each result is the average of three drops. Surface temperature was recorded before lying down, after 30 minutes, and again 10 minutes after getting up. The final support, pressure-relief, cooling, motion-isolation, responsiveness, edge-support, and durability ratings use a 5-point scale.

Our Testing Experience

Novaform felt like a 5.5 out of 10 for firmness and produced the deepest, slowest contour in the group. A 44-pound load compressed the center by 2.4 inches, and the foam took 2.8 seconds to recover 90% of its height. That give was helpful on our sides: the shoulders and outer hips settled in while the denser base kept the waist from dropping too far.

It was also the quietest surface. The medicine-ball drop registered just 0.13 g at the nearby sensor, the lowest result of the four. Heat was the clearer compromise: the surface rose from 72.1°F to 80.2°F after 30 minutes and returned to 73.8°F after 10 minutes of cooling. The foam did not feel stifling, but it held more warmth than Casper. At the edge, the same load compressed 3.1 inches, matching the softer seated support we felt in everyday use.

What we liked

• Deep, even pressure relief without excessive midsection sag
• The least noticeable partner movement in the group
• A medium feel that works for many side sleepers

Who it is best for

• Side sleepers who need more room for the shoulders and hips
• Couples who care more about motion control than bounce
• Sleepers who enjoy close foam contouring

Where it falls short

• The edge dips noticeably while seated
• Its slow recovery makes repeated position changes more tiring
• It warms more over time than Casper

Pros & Cons

Details

• Firmness: Medium
• Type: Memory foam
• Thickness: 14 in
• Sizes: Twin, Twin XL, Full, Queen, King, Cal King
• Cooling: cool-to-touch quilted cover, phase-change gel, GelMAX memory foam
• Warranty: 20 years
• Delivery: doorstep; setup and package removal not included

Review Score

Our Testing Experience

Casper felt like a true medium at 6 out of 10. The top foams softened pressure around the shoulders, but the coils stopped the body from settling as deeply as it did on Novaform. Under the 44-pound load, the center compressed 1.8 inches and recovered 90% in 0.9 seconds. We could roll from side to back without bracing an arm against the mattress.

It delivered the best temperature result. The surface gained 5.4°F after 30 minutes, compared with Novaform’s 8.1°F increase, and it shed most of that heat within 10 minutes. Motion control was good rather than exceptional: the drop test registered 0.19 g, so light movement stayed subdued but a forceful turn still sent a small pulse through the coils. Edge compression reached 2.3 inches, enough to feel secure while lying near the side without matching the two innerspring models.

What we liked

• The most balanced mix of cushioning, lift, and easy movement
• The smallest temperature rise in the group
• Good motion control for a responsive hybrid

Who it is best for

• Combination sleepers who change positions often
• Hot sleepers who still want some foam cushioning
• Couples trying to balance motion isolation and responsiveness

Where it falls short

• Very light sleepers may still notice a partner’s larger movements
• It does not provide the deep contour of a traditional memory-foam bed

Pros & Cons

Details

• Firmness: Medium
• Type: Hybrid
• Thickness: 12 in
• Sizes: Full, Queen, King, Cal King
• Construction: breathable open-cell foam, memory foam, zoned transition foam, support foam, resilient coils, cooling cover
• Warranty: 10-year limited
• Delivery: compact box to the doorstep; setup not included by default

Review Score

Our Testing Experience

These scores apply to the Firm Pillow Top sample. It felt like a 7 out of 10 and delivered the most traditional spring response of the four. The reinforced middle kept our hips level during back and stomach sleeping, while the 44-pound load compressed the center by only 1.5 inches. After the load came off, the surface recovered 90% of its height in 0.5 seconds, the fastest result in the group.

The DuraFlex perimeter also held its shape. Compression increased only to 1.7 inches at the edge, so sitting down to put on shoes felt stable and sleeping near the side did not create a strong tilt. The compromise was easy to feel when a partner turned: the drop test reached 0.31 g, the highest reading here. The separately sold Plush Pillow Top should offer more surface give, but it should not be expected to match the firmness or pressure profile reported in this score.

What we liked

• Firm, steady support through the center
• A secure edge for sitting and edge sleeping
• The quickest recovery during position changes

Who it is best for

• Back sleepers who want firmer lumbar support
• Higher-weight sleepers who want less sink through the middle
• Anyone who sits on the edge of the bed every day

Where it falls short

• Large movements travel farther across the surface
• The Firm Pillow Top does not cushion side sleepers as deeply as Novaform
• The Plush Pillow Top is a separate feel and should be judged independently

Pros & Cons

Details

• Firmness: Firm Pillow Top tested; Plush Pillow Top also available
• Type: Innerspring
• Thickness: 14 in
• Sizes: Full, Queen, King, Cal King
• Construction: reinforced center support, SealyCool Air Gel Foam, DuraFlex coil edge
• Warranty: 10 years
• Delivery: in-room setup, packaging removal, and haul-away in eligible areas

Review Score

Our Testing Experience

Lakeridge felt substantial without being hard. We rated it 6.5 out of 10: the pillow top compressed enough to cushion the upper back and hips, while the IntelliCoil unit supplied clear pushback below. The 44-pound load sank 1.7 inches at the center, and the surface recovered 90% in 0.6 seconds. That quick rebound made it almost as easy to turn on as Sealy, with a smoother transition from cushion to support.

The Precision Edge delivered the best edge support in the group. The same load compressed just 1.6 inches near the side—slightly less than at the center—and the mattress stayed level when we sat or slept close to the perimeter. Motion transfer was moderate: the drop test measured 0.27 g, better than Sealy but well above Novaform and Casper. After 30 minutes, the surface temperature rose 6.2°F, a respectable result for a thick pillow top but not as cool as Casper.

What we liked

• A cushioned top over the strongest support in the group
• The most stable edge for sitting and using the full width
• Quick recovery without a harsh spring feel

Who it is best for

• Back sleepers who want cushioning over firm support
• Combination sleepers who dislike slow foam
• Couples who regularly sleep near the edge

Where it falls short

• Partner movement is easier to feel than on Novaform or Casper
• The 14.5-inch profile can make an already tall bed awkward to enter
• Sleepers seeking a soft, deep cradle may find the underlying support too assertive

Pros & Cons

Details

• Firmness: Medium
• Type: Innerspring
• Thickness: 14.5 in
• Sizes: Queen, King, Cal King
• Construction: TENCEL Lyocell cover, Indulge memory foam, IntelliCoil support, Precision Edge, AirVent
• Warranty: 10 years
• Delivery: in-room setup and haul-away in eligible areas

Review Score

Casper had the most even results, with no score below 4.0. Novaform dominated pressure relief and motion isolation but trailed on response and edge support. Sealy and Kirkland were faster and more stable around the perimeter; Kirkland added more cushioning and finished with the strongest overall support, while Sealy’s firmer surface transferred the most motion.

Start with sleep position, then decide whether motion control, easy movement, or edge stability matters most. Novaform is the clear pick for side sleepers and anyone who wants the least partner disturbance. Casper Cooling Select works better for couples who need a neutral mix of cooling, cushioning, and responsiveness. Sealy Ridge Crest II Firm suits back and stomach sleepers who prefer a firmer spring surface, though the Plush Pillow Top is the smarter version for people who need more give at the shoulders. Kirkland Lakeridge is the strongest choice when you want a cushioned top, quick response, and full use of the mattress width.

None of these beds solves every problem. Novaform absorbs movement and cushions pressure best, but it is slower to turn on, warmer after extended contact, and softer at the edge. Casper avoids a major weakness, yet it cannot match Novaform’s deep contour or Kirkland’s perimeter stability. Sealy Firm responds immediately and supports the middle well, but it transfers the most motion and gives side sleepers less shoulder room. Kirkland offers the strongest overall build, though its height can be inconvenient and its coils still pass along partner movement. Stock, price, and delivery service also vary by size and location, so confirm the exact listing before ordering.

Buying through Costco keeps several distinct constructions under one retailer. Novaform and Casper arrive compressed at the doorstep, while eligible Sealy and Kirkland orders include in-room setup and haul-away. The four models also cover genuinely different needs instead of offering small variations on the same medium feel.

Saatva Classic is the premium alternative to Sealy and Kirkland. It offers three firmness levels, two heights, free in-room setup and mattress removal, a 365-night home trial, and a lifetime warranty under Saatva’s current direct-purchase terms. It costs more, but the added choice and service are worthwhile when you want to fine-tune a traditional coil feel.

Nectar Classic Memory Foam competes more directly with Novaform. Its 12-inch, medium-firm design contours closely and currently includes a 365-night trial and Forever Warranty for eligible purchases. Nectar is the stronger option when a defined at-home trial matters most; Novaform makes more sense when you want a taller, softer foam bed and prefer buying through Costco.

Helix Core mattresses are the more configurable alternative to Casper Cooling Select. The line separates soft, medium, and firm hybrids by sleep position and includes a 120-night trial and limited lifetime warranty under current direct-brand terms. Helix asks you to make more choices and generally sits higher in price, but it offers a more targeted fit than Casper’s single medium option.

• Confirm the exact model and comfort choice. Sealy Firm and Plush share one listing but should not be treated as the same feel.
• Let Novaform or Casper expand fully in a room-temperature space before judging firmness or height.
• Use breathable bedding and a lightweight protector if you sleep hot.
• Rotate the mattress according to the manufacturer’s guidance to help distribute wear.
• If you sit or sleep near the edge, prioritize Sealy or Kirkland. If movement wakes you, put Novaform first.
• Check that your bed base is compatible; flexible or widely spaced slats can change how supportive a mattress feels.
• Measure the finished bed height before ordering Kirkland, especially if the frame already has a foundation.
• Give the mattress a few weeks to break in before making a final comfort decision.

Novaform ComfortGrande cushions the shoulders and hips most effectively and does the best job of limiting partner movement. Side sleepers who want more bounce should consider Casper instead.

Sealy Ridge Crest II Firm recovered fastest, with Kirkland Lakeridge close behind. Casper was also easy to turn on. Novaform’s deeper, slower foam required more effort.

Casper Cooling Select gives most couples the best balance of support, cooling, motion control, and easy movement. Choose Novaform instead if one partner wakes very easily when the other moves.

Kirkland Lakeridge had the most stable perimeter in both seated and lying-down checks. Sealy Ridge Crest II Firm was a close second, while Novaform compressed the most at the edge.