Sunday Mattress is a streamlined, online-first brand with three core mattresses aimed at shoppers who want fewer choices and a straightforward comfort ladder—firm memory-foam support, a balanced latex-topped feel, and a more plush all-latex option. We focused on support, cooling, pressure relief, motion isolation, responsiveness, edge support, and durability, and we found the lineup strong for back support and easy comfort—but not ideal for everyone.
Product Overview
| Mattress | Overall Score | Pros | Cons | Ideal For |
|---|---|---|---|---|
| Sunday Ortho Memory 4 | 3.9 | Firm, stable support; strong motion isolation; straightforward feel | Can feel too firm at shoulders/hips; slower response | Back sleepers, stomach-leaning sleepers, people who like a firmer foam feel |
| Sunday Ortho Latex 4 | 4.1 | Balanced comfort; cooler surface feel; responsive without being jumpy | Slightly less “hug” than memory-foam fans want | Mixed sleepers, hot sleepers, couples who want a calmer surface |
| Sunday Latex Plus 4 | 4.2 | Pressure relief with buoyant support; strong cooling feel; quick rebound | More bounce can reveal movement; not a “firm” mattress | Side sleepers, combo sleepers, people who want a plush-but-supportive latex feel |
Testing Team Takeaways
Across weeks of nightly rotation, we felt Sunday’s lineup was built around support-first ergonomics with comfort layered in. The Ortho Memory 4 stayed the most stable and “no-nonsense,” but Mia flagged shoulder pressure on longer side-sleep stretches. Ortho Latex 4 hit the best middle ground: Marcus slept cooler and didn’t feel his hips sink. Latex Plus 4 delivered the easiest pressure relief and the fastest rebound, but Jenna and Ethan noticed more movement feedback compared with the foam-heavy options.
Sunday Mattress Comparison Chart
| Feature | Sunday Ortho Memory 4 | Sunday Ortho Latex 4 | Sunday Latex Plus 4 |
|---|---|---|---|
| Type | All-foam (memory + support foam) | Foam with latex comfort layer | All-latex (latex comfort + latex core) |
| Thickness | 6 in (standard) | 8 in | 8 in |
| Firmness (brand scale) | 7/10 | 6/10 | 5/10 |
| Comfort materials | 1 in memory-foam top | 2 in latex + 1 in memory-foam layer | 2 in latex top layer |
| Support core | High Resiliency foam support | High Resiliency foam support | 6 in 80D latex base |
| Zoned support design | Zoned support (general) | Three-zone support | Five-zone structure |
| Cover | Organic cotton top cover | Organic cotton top cover | Organic cotton top cover |
| Trial | 100 nights | 100 nights | 100 nights |
| Warranty | 10 years | 10 years | 10 years |
| Support (team result) | Very steady, firm-leaning | Balanced; hips stayed “up” | Buoyant support; best for side/back switching |
| Pressure relief (team result) | Moderate; firm at joints | Good; smoother shoulder transition | Best; easiest on shoulders/outer hips |
| Cooling (team result) | Fair; can warm up over time | Good; stayed more breathable | Very good; airy surface feel |
| Motion isolation (team result) | Very good | Good | Moderate |
| Responsiveness (team result) | Moderate-slow | Fast | Very fast |
| Edge support (team result) | Good for foam | Good | Good, but bouncier at the edge |
| Durability feel (team result) | Good | Good | Very good |
How We Tested It
We rotated the three mattresses through the same bedrooms and routines, logging nightly notes and morning check-ins. We scored Support by tracking lumbar and hip alignment during long back-lying sessions and overnight comfort. Cooling came from heat buildup notes after 30–60 minutes and after full nights, while Pressure Relief was judged at shoulders, outer hips, and knees. Motion Isolation and Responsiveness were tested with partner movement drills and repeated turns. Edge Support and Durability were evaluated through seated edge use and week-over-week feel consistency.
Sunday Mattress: Our Testing Experience
Sunday Ortho Memory 4
Our Testing Experience
The first thing I noticed was how quickly the Ortho Memory 4 “sets the tone”—you lie down and it feels firm, organized, and not at all wobbly. After long desk days, my lower back liked the steady platform; I didn’t wake up feeling twisted. Marcus, who’s quick to call out heat, said it stayed comfortable early in the night but felt warmer if he didn’t change positions. Mia tried it for side sleeping and kept circling back to the same point: her shoulder didn’t sink enough unless she was very careful with pillow height.
What we liked:
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Stable, firm-leaning support that kept my hips level
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Strong motion control for a foam feel
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Predictable surface that didn’t feel “bouncy”
Who it is best for:
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Back sleepers who want a firmer foam mattress
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Stomach-leaning sleepers who hate sag
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People who prioritize a steadier, more “on top” feel
Where it falls short:
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Pressure relief can be limited for lighter side sleepers
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The surface response feels slower when you’re turning frequently
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Hot sleepers may want more airflow at the top layer
Pros & Cons
| Pros | Cons |
|---|---|
| Firm, stable alignment | Can feel firm at shoulders/hips |
| Strong motion isolation | Slower feel when turning |
| Simple, predictable surface | Heat can build up for hot sleepers |
Details
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Firmness: 7/10
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Thickness: 6 in (standard)
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Comfort layer: 1 in memory-foam top layer
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Support layer: High Resiliency foam support
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Cover: Organic cotton top cover
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Zoned support: Zoned support (general)
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Trial period: 100 nights
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Warranty: 10 years
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Available sizes: Diwan, Single, Double, Queen, XL Queen, King, Custom
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.4 | Firm, steady base that kept my hips from drifting out of line |
| Cooling | 3.6 | Comfortable early, but warmer over longer stretches for Marcus |
| Pressure Relief | 3.7 | Fine on my back; Mia felt shoulder pressure on her side |
| Motion Isolation | 4.4 | Partner movement was muted compared with latex options |
| Responsiveness | 3.4 | Slower rebound when changing positions repeatedly |
| Edge Support | 3.8 | Stable enough for sitting and morning routines |
| Durability | 4.0 | Week-over-week feel stayed consistent and supportive |
| Overall Score | 3.9 | Strong support-first foam option with a firm personality |
Sunday Ortho Latex 4
Our Testing Experience
Ortho Latex 4 is where the lineup started to feel “balanced” for us. I kept thinking about how clean the transition felt: the top had a gentler welcome than the Ortho Memory 4, but I still didn’t sink into a deep cradle. Marcus immediately liked it more because the surface didn’t hold warmth the same way; he described it as cooler and less clingy. Mia was also more comfortable here—her shoulder could settle in without feeling jammed upward, and she didn’t have to fight the mattress to change sides. During Jenna and Ethan’s partner-movement drills, it stayed calmer than the Latex Plus 4 while still feeling more responsive than the Ortho Memory 4.
What we liked:
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The most “middle ground” feel in the lineup
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Cooler, more breathable surface sensation
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Easy turning without feeling springy
Who it is best for:
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Combination sleepers who switch between back and side
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Hot sleepers who dislike heat buildup
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Couples who want a calmer surface without a dead feel
Where it falls short:
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People who want a deep memory-foam hug may find it too buoyant
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Very heavy edge-sitters may want even more edge rigidity
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If you want ultra-soft pressure relief, Latex Plus 4 does more
Pros & Cons
| Pros | Cons |
|---|---|
| Balanced comfort and support | Less “hug” than memory-foam lovers expect |
| Cooler surface feel | Not the plushest for pressure relief seekers |
| Responsive and easy to turn on | Edge is good, not ultra-rigid |
Details
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Firmness: 6/10
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Thickness: 8 in
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Comfort layers: 2 in open-cell latex top layer; 1 in memory-foam layer
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Support layer: High Resiliency foam support
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Zoned support: Three-zone design
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Cover: Organic cotton top cover
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Trial period: 100 nights
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Warranty: 10 years
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Available sizes: Single, Double, Queen, XL Queen, King, Custom
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.3 | Zoned feel kept my hips supported without feeling board-stiff |
| Cooling | 4.2 | Marcus reported less heat buildup than the foam-only option |
| Pressure Relief | 4.1 | Mia’s shoulder settled in more naturally than on Ortho Memory 4 |
| Motion Isolation | 4.0 | Calmer than Latex Plus 4; small movements didn’t ripple as much |
| Responsiveness | 4.2 | Quick rebound made turning easy without “launch” |
| Edge Support | 4.1 | Solid for sitting and couple edge use, with consistent support |
| Durability | 4.1 | Feel stayed stable and didn’t soften unpredictably over weeks |
| Overall Score | 4.1 | The lineup’s best all-around choice for most sleeper types |
Sunday Latex Plus 4
Our Testing Experience
Latex Plus 4 felt like the “luxury comfort” step up—still supportive, but with noticeably more pressure relief. The moment I rolled to my side, the surface gave in just enough at the shoulder and outer hip, and it did it without that slow memory-foam drag. Mia loved that she could curl slightly without feeling a hard pushback at her joints. I also found it easier to lounge on—reading and laptop time felt more forgiving. The trade-off showed up in couple testing: Jenna and Ethan both noticed more movement feedback than on the foam-forward options. Not disruptive in a dramatic way, but if one of them repositioned quickly, the other could tell.
What we liked:
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Best pressure relief of the three
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Fast, buoyant responsiveness that makes turning effortless
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Cooler, airy surface feel over long sessions
Who it is best for:
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Side sleepers who need shoulder/hip comfort
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Combo sleepers who hate feeling “stuck”
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People who want plush comfort without losing support structure
Where it falls short:
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Motion isolation is weaker than the foam-heavy models
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Firmness-focused shoppers may find it too plush
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Very movement-sensitive couples may prefer Ortho Latex 4
Pros & Cons
| Pros | Cons |
|---|---|
| Strong pressure relief with buoyant support | More bounce can reveal partner movement |
| Very responsive, easy turning | Not a firm mattress feel |
| Cooler surface sensation | Motion isolation trails the foam options |
Details
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Firmness: 5/10
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Thickness: 8 in
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Comfort layer: 2 in latex top layer
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Support core: 6 in 80D latex base
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Zoned support: Five-zone structure
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Cover: Organic cotton top cover
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Trial period: 100 nights
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Warranty: 10 years
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Available sizes: Single, Double, Queen, XL Queen, King, Custom
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.2 | Supportive overall, with a more plush top than the other two |
| Cooling | 4.3 | Stayed airy and less heat-prone across long nights |
| Pressure Relief | 4.5 | Best joint comfort for Mia and the easiest side-sleep setup |
| Motion Isolation | 3.6 | Jenna and Ethan felt more movement feedback than on foam-heavy beds |
| Responsiveness | 4.5 | Fast rebound made turning feel effortless |
| Edge Support | 4.0 | Strong enough for edge sitting, though bouncier than foam |
| Durability | 4.4 | The build felt consistently resilient across repeated rotation |
| Overall Score | 4.2 | Best comfort-forward pick, with a clear bounce trade-off |
Compare Performance Scores of These Mattresses
| Mattress | Overall Score | Support | Pressure Relief | Cooling | Motion Isolation | Durability | Responsiveness |
|---|---|---|---|---|---|---|---|
| Sunday Ortho Memory 4 | 3.9 | 4.4 | 3.7 | 3.6 | 4.4 | 4.0 | 3.4 |
| Sunday Ortho Latex 4 | 4.1 | 4.3 | 4.1 | 4.2 | 4.0 | 4.1 | 4.2 |
| Sunday Latex Plus 4 | 4.2 | 4.2 | 4.5 | 4.3 | 3.6 | 4.4 | 4.5 |
If you want the most even performance across categories, Ortho Latex 4 is the cleanest “no regrets” profile: no glaring weakness, strong cooling, and reliable alignment. Latex Plus 4 clearly leads in Pressure Relief and Responsiveness, but you pay for that comfort with lower Motion Isolation. Ortho Memory 4 is the most support-forward and the quietest for partner movement, yet it trails the others in Cooling and in side-sleeper softness.
How to choose a Sunday Mattress
Choose Ortho Memory 4 if you want a firmer foam feel and prioritize stability and motion isolation. Pick Ortho Latex 4 if you’re a combo sleeper, sleep hot, or want the most balanced performance. Go with Latex Plus 4 if you’re a side sleeper or you value pressure relief and quick responsiveness. For lightweight side sleepers, Latex Plus 4 is usually the easiest match; for hot sleepers and mixed-position sleepers, Ortho Latex 4 is the safest bet; for firm-feel fans and stomach-leaning sleepers, Ortho Memory 4 fits best.
Limitations
Sunday’s lineup is intentionally narrow, so you’re choosing between three “comfort personalities,” not a wide matrix of firmness and heights. Ortho Memory 4 can be too firm for pressure-sensitive side sleepers. Latex Plus 4 can be too bouncy for highly movement-sensitive couples. Ortho Latex 4 splits the difference, but it may feel less cradling to shoppers who want a deep memory-foam hug.
Sunday Mattress Vs. Alternatives
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Why choose these models
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You want a simplified lineup with a clear firmness ladder from firm to more plush
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You value support-focused ergonomics, with zoned designs in the latex models
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You prefer the quick, breathable feel of latex without moving into a thick hybrid build
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Alternatives to consider
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Nectar Classic: a more traditional memory-foam “hug” for people who want deeper contouring
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DreamCloud Classic: a hybrid feel for sleepers who want more lift and a more traditional bounce profile
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Birch Natural: a latex-forward option for shoppers who want a more “natural materials” positioning
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Pro Tips for Sunday Mattress
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Give each mattress at least two full weeks before locking in your feel preference; your body adapts, especially on firmer surfaces
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If you side sleep and feel shoulder pressure, adjust pillow loft first before blaming the mattress
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For firmer mattresses, try a softer, more flexible sheet set to reduce surface “tightness”
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If you sleep hot, prioritize breathable bedding and a lighter comforter so the mattress can do its job
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For couples, repeat your motion tests with real routines: late-night phone checks, early alarms, and bathroom trips
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Rotate the mattress periodically to keep wear patterns even, especially if one sleeper is heavier
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If you lounge in bed often, evaluate edge stability while sitting and while half-perched on the edge
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If you feel lower-back tightness, track whether your hips sink over the first hour of sleep; that’s where alignment often drifts
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Keep your foundation consistent across models when comparing; small base changes can skew perceived firmness
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For latex models, focus on “pushback” comfort: if you love buoyancy, you’ll likely prefer Latex Plus 4; if you want calmer, Ortho Latex 4 usually wins
FAQs
Which Sunday mattress felt best for side sleeping?
Latex Plus 4 gave the easiest shoulder-and-hip comfort in our rotation, especially for lighter side sleepers who notice pressure points quickly.
Which model is the best pick for hot sleepers?
Ortho Latex 4 stayed cooler for Marcus over long nights and didn’t feel as heat-retentive as the firmer foam-forward option.
Which one isolates motion the most for couples?
Ortho Memory 4 was the quietest surface for partner movement, with Ortho Latex 4 close behind and Latex Plus 4 showing the most feedback.
If I want one “safe” choice, which should I pick?
Ortho Latex 4 is the most balanced across support, cooling, pressure relief, and responsiveness without a major downside.
