Sunday Mattress Reviews (2026)

All three mattresses held the midsection securely, but they did not feel interchangeable. Ortho Memory 4 was the firmest and least springy. Mia felt shoulder pressure during longer side-sleeping stretches, while Ortho Latex 4 gave her more room to settle without letting the hips dip. Marcus also found the latex-over-foam model noticeably cooler than Ortho Memory 4.

Latex Plus 4 cushioned the shoulders and hips best and snapped back fastest during position changes. Its bounce was the clear trade-off: Jenna and Ethan noticed each other turning more often than they did on the two foam-core mattresses. For most mixed-position sleepers, Ortho Latex 4 offers the cleanest balance of comfort, cooling, and motion control.

Each mattress spent seven nights in the same bedroom, with back, side, and combination sleepers recording comfort and morning stiffness. For support, we watched the hip and lumbar area during extended back-sleeping sessions, then compared those notes with a 44-pound indentation check.

For cooling, we measured the surface before lying down and again after 30 minutes. We judged pressure relief at the shoulders and hips, timed how quickly each surface recovered to 90% of its original height, and repeated a 10-pound ball drop three times with a sensor 12 inches away for motion isolation. Seated-edge checks and repeated compression helped round out the responsiveness, edge-support, and durability scores.

Our Testing Experience

Our 6-inch Ortho Memory 4 sample measured exactly 6 inches after expansion and felt firmer than its 7/10 brand rating suggested—about 7.2/10 to our group. A 44-pound weight sank 1.0 inch, the least of the three. That shallow compression matched the overnight experience: hips stayed level during back sleeping, and the surface barely shifted when a partner rolled over or got out of bed.

The same resistance that kept the hips up pressed back against the shoulder during side sleeping. Mia began adjusting her position more often after about 20 minutes, while Marcus noted a 7.1°F surface-temperature rise after 30 minutes. The foam needed 1.8 seconds to regain 90% of its height after the weight was removed, so turns required a little more effort than on either latex model.

What we liked:

• Firm, even support that kept the hips from dipping

• The best motion control in the Sunday lineup

• A quiet, stable surface with almost no bounce

Who it is best for:

• Back sleepers who want firm foam without a deep hug

• Stomach sleepers who need the pelvis held near the surface

• Couples who wake easily when a partner changes position

Where it falls short:

• Too little shoulder and hip cushioning for many lighter side sleepers

• Slow foam recovery that makes quick turns feel less fluid

• The most noticeable heat buildup of the three

Details

• Firmness: 7/10

• Thickness: 6 in standard; 8 in selected sizes

• Standard 6-in build: 1 in memory foam

• Standard 6-in build: 5 in high-resiliency foam

• Cover: Organic-cotton top cover

• Support: Zoned design

• Trial: 100 nights, subject to current terms

• Warranty: 10-year limited warranty

• Sizes: Diwan, Single, Double, Queen, XL Queen, King, and custom

Review Score

Our Testing Experience

Ortho Latex 4 was the one mattress every tester could settle into quickly. The 8-inch sample measured 8.0 inches, and our group placed it at 6.1/10 for firmness. Under the same 44-pound load, it compressed 1.4 inches—enough to ease the first point of contact at the shoulder while the foam core kept the hips from dropping too far.

Marcus felt less trapped by heat than he did on Ortho Memory 4; after 30 minutes, the surface had risen 5.0°F above baseline. The latex layer recovered to 90% height in 0.7 seconds, so rolling from back to side felt quick but not springy. Motion lasted 0.72 seconds after the ball drop, longer than on Ortho Memory 4 but clearly shorter than on Latex Plus 4. That middle-ground behavior is why this model earned our strongest all-around recommendation.

What we liked:

• The most even performance across our test categories

• Noticeably less heat buildup than Ortho Memory 4

• Fast position changes without an overly springy feel

Who it is best for:

• Combination sleepers who switch between back and side

• Hot sleepers who still want their hips held securely

• Couples who want easy movement without excessive motion transfer

Where it falls short:

• Too responsive for anyone who wants a slow, deep foam hug

• Dependable rather than exceptionally firm edge support

• Less shoulder and hip relief than Latex Plus 4

Details

• Firmness: 6/10

• Thickness: 8 in

• Comfort layers: 2 in latex; 1 in memory foam

• Support layer: 5 in high-resiliency foam

• Support: Three-zone design

• Cover: Organic-cotton top cover

• Trial: 100 nights, subject to current terms

• Warranty: 10-year limited warranty

• Sizes: Single, Double, Queen, XL Queen, King, and custom

Review Score

Our Testing Experience

Latex Plus 4 measured 8.0 inches and felt closest to its 5/10 brand rating; our group placed it at 5.2/10. The 44-pound weight sank 1.7 inches, allowing more room at the shoulder and outer hip than either foam-core model. That extra give eased pressure points without creating the slow, enclosed feeling of memory foam.

The surface recovered to 90% height in 0.4 seconds, and its temperature rose just 4.2°F after 30 minutes—the quickest recovery and smallest heat increase in the group. The trade-off appeared in the motion test, where vibration continued for 1.10 seconds after the ball drop. Jenna and Ethan also noticed more movement during turns and when one person left the bed. For solo sleepers and couples who are not motion-sensitive, the easier movement and stronger cushioning are worth it.

What we liked:

• The deepest shoulder and hip cushioning in the lineup

• Immediate rebound that made position changes effortless

• The lowest heat buildup in our 30-minute check

Who it is best for:

• Side sleepers who need extra room at the shoulder and hip

• Combination sleepers who dislike slow-moving memory foam

• Shoppers who want a softer feel without sacrificing underlying support

Where it falls short:

• The most noticeable partner movement of the three

• Too soft and lively for shoppers who prefer a flat, firm surface

• Its all-latex build is heavier and more awkward to reposition

Details

• Firmness: 5/10

• Thickness: 8 in

• Comfort layer: 2 in latex

• Support core: 6 in 80D latex

• Support: Five-zone design

• Cover: Organic-cotton top cover

• Trial: 100 nights, subject to current terms

• Warranty: 10-year limited warranty

• Sizes: Single, Double, Queen, XL Queen, King, and custom

Review Score

Ortho Latex 4 posted the most even set of scores and has no serious weakness. Latex Plus 4 led for pressure relief, cooling, responsiveness, and durability, but its motion isolation was clearly weaker. Ortho Memory 4 offered the firmest support and best partner-movement control, with lower scores for cooling and side-sleeper comfort.

Pick Ortho Memory 4 when a firm foam feel and minimal partner disturbance matter more than deep cushioning. Ortho Latex 4 is the strongest default choice for a mixed-position sleeper, a hot sleeper, or a couple balancing different preferences. Choose Latex Plus 4 if you spend much of the night on your side and value pressure relief and easy movement more than motion isolation.

Sunday’s main advantage is a clearly separated lineup: firm foam, balanced latex-over-foam, and softer all-latex. All three include zoned support and an organic-cotton top cover, so the decision comes down more to feel and budget than to sorting through minor variations of the same mattress.

Wakefit ShapeSense Orthopedic Classic is the closest match for Ortho Memory 4. Wakefit’s medium-firm memory-foam build offers more contouring and a broader choice of heights. Ortho Memory 4 feels flatter and firmer, making it the better fit when hip support and motion control outrank pressure relief.

SleepyCat Ultima Natural Latex is the more direct alternative to Ortho Latex 4. Its medium-soft design uses a thinner natural-latex comfort layer over transition and support foams. SleepyCat has more initial cushioning; Sunday’s thicker latex layer and firmer foam core produce a steadier surface with easier back-to-side transitions.

The Sleep Company Smart Ortho Pro belongs beside Latex Plus 4 for shoppers in a higher price tier, but the feel is very different. Smart Ortho Pro combines a responsive grid with zoned foam and feels substantially firmer. Latex Plus 4 is the better choice for a buoyant all-latex surface and deeper shoulder relief; Smart Ortho Pro suits sleepers who want firm, grid-based support without latex.

• Use at least two weeks of the trial period before deciding, especially when moving to a firmer surface.

• If you sleep on your side and feel shoulder pressure, check your pillow height before blaming the mattress alone.

• If you sleep hot, pair the mattress with breathable bedding and a lighter comforter.

• For couples, judge motion transfer during normal routines, including different bedtimes and early alarms.

• Rotate the mattress on the recommended schedule to spread wear, especially when partners differ substantially in weight.

• Compare models on the same foundation; a different base can change how firm and stable a mattress feels.

• When comparing latex-based mattresses, decide how much surface movement you enjoy: Latex Plus 4 is lively, while Ortho Latex 4 feels more controlled.

Latex Plus 4 gave the shoulder and hip the most room to settle, making it the clear pick for side sleepers who feel pressure quickly.

Latex Plus 4 had the smallest temperature increase and earned our highest cooling score. Ortho Latex 4 was close behind and is the better option if you also want a firmer, steadier surface.

Ortho Memory 4 muted partner movement most effectively. Ortho Latex 4 ranked second, while Latex Plus 4 transferred the most movement.

Choose Ortho Latex 4. It balanced support, cooling, pressure relief, motion control, and responsiveness without forcing the sharper trade-offs of the firmer Ortho Memory 4 or springier Latex Plus 4.