The four mattresses in this review take two different routes to affordable comfort. FlexiSpot's U3, U2, and U1 use a hybrid construction with foam and pocketed coils, while the MLILY EGO Copper uses an all-foam build. The U3 delivered the best overall balance of support, pressure relief, and edge stability. The U2 and U1 felt firmer and easier to move across, while the EGO Copper was the better option for sleepers who prioritize motion isolation. Availability and pricing vary by size and seller, so the more useful question is how each bed feels and who it fits.
Table of Contents
- Which mattress is the best fit?
- Our verdict on each mattress
- How the four mattresses compare
- What we tested and why
- FlexiSpot mattresses: our hands-on experience
- How their performance scores compare
- Which model should you choose?
- Where these mattresses fall short
- How FlexiSpot compares with popular alternatives
- How to get the best results
- FAQs
Which Mattress Is the Best Fit?
| Mattress | Overall Score | Pros | Cons | Ideal For | Price |
|---|---|---|---|---|---|
| FlexiSpot U3 | 4.4/5 | Stable edges; balanced cushioning | More motion transfer than foam | Combination sleepers and couples | Check current price |
| FlexiSpot U2 | 4.2/5 | Steady support; easy movement | Less cushioning than U3 | Back sleepers and hot sleepers | Check availability |
| FlexiSpot U1 | 4.0/5 | Simple, supportive hybrid feel | Limited pressure relief | Shoppers seeking a mattress under $500 and guest-room buyers | Check availability |
| MLILY EGO Copper | 4.1/5 | Excellent motion control; deep contouring | Soft edges; slower response | Side sleepers and motion-sensitive couples | Check current price |
Our Verdict on Each Mattress
The FlexiSpot U3 is the clear all-around choice. It supported the lower back without making the shoulders and hips feel crowded, and its reinforced perimeter made the full surface easier to use. Choose it if two people need a bed that works across several sleep positions.
The FlexiSpot U2 feels firmer and more level than the U3. Marcus preferred its on-top feel and quick response, especially on warmer nights. It is the better match for back sleepers who want support without a thick, plush comfort layer.
The FlexiSpot U1 is the straightforward value pick. It is stable, responsive, and comfortable for back sleeping, but its thinner cushioning becomes noticeable during long side-sleeping stretches. It makes the most sense for a guest room or a buyer who prioritizes price and easy movement.
The MLILY EGO Copper is the specialist in this group. Mia favored its pressure relief and quiet surface, and it kept partner movement more localized than any of the hybrids. Its weaker perimeter and slower rebound are real trade-offs, but side sleepers and light sleepers may prefer its deeper contour.
How the Four Mattresses Compare
| Feature | FlexiSpot U3 | FlexiSpot U2 | FlexiSpot U1 | MLILY EGO Copper |
|---|---|---|---|---|
| Type | Foam-and-coil hybrid | Foam-and-coil hybrid | Foam-and-coil hybrid | Memory foam |
| Height | 13 inches | 12 inches | 10 inches | Varies by configuration |
| Tested feel | Medium-firm, 6.5/10 | Firm side of medium, 7.0/10 | Firm side of medium, 7.2/10 | Medium, 6.0/10 |
| Key materials | Gel foams; pocketed coils | Cooling gel foam; pocketed coils | Blue gel foam; pocketed coils | Copper-gel foam; graphene cover |
| Cooling | Very good | Very good | Good | Fair to good |
| Motion isolation | Good | Good | Fair to good | Excellent |
| Edge support | Very good | Good | Good | Fair |
| Best use | Primary bed for mixed positions | Supportive bed for back sleepers | Guest room or value-focused setup | Quiet surface with deeper pressure relief |
What We Tested and Why
Following our mattress testing framework, each mattress went through nightly sleep, position changes, edge sitting, and near-edge lying. We also used repeatable weight, temperature, motion, and recovery checks so small differences in firmness were easier to compare. Testers rotated among back, side, and occasional stomach sleeping rather than judging each bed from a single position.
Support scores reflect lumbar stability and hip sink. Cooling scores combine surface-temperature change with how quickly heat cleared after the tester got up. Pressure relief focuses on shoulder and hip comfort during side sleeping. Motion isolation comes from repeated impact tests, responsiveness from timed foam recovery and ease of turning, and edge support from comparing compression at the perimeter and center. Durability scores consider construction and changes observed after repeated use; they are not a substitute for years of ownership.
FlexiSpot mattresses: our hands-on experience
FlexiSpot U3

Our testing experience
The U3 measured 13.0 inches after expansion and felt like a 6.5 out of 10 for firmness. Its comfort layers let the hips settle without pulling the lower back down, so moving from side to back felt smooth rather than sticky. Under a 44-pound weight, the surface compressed 2.0 inches at the center. That result matched the bed's balanced feel: enough give for the shoulder, but not enough to lose support through the waist.
The reinforced perimeter was useful rather than merely noticeable. Edge compression measured 2.7 inches compared with 2.3 inches at the center under the same load, and a 10-minute edge sit did not produce a sliding sensation. After 30 minutes of lying down, the surface temperature rose 3.4°F, then dropped quickly once uncovered. It was not as motion-deadening as the EGO Copper, but it handled heat, movement, and edge use better as a complete package.
What we liked
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Balanced midsection support with enough cushioning for side sleeping
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The kind of secure perimeter shoppers expect from a mattress with strong edge support
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More consistent temperature control than the all-foam model
Who it is best for
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Combination sleepers who alternate between back and side
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Couples who regularly use the outer third of the mattress
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People who want medium-firm support without a flat, rigid surface
Where it falls short
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Very light sleepers may notice more partner movement than they would on foam
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Fans of deep, slow-moving contouring may find it too responsive

Pros & Cons
| Pros | Cons |
|---|---|
| Stable edge | Some motion transfer |
| Balanced contour and support | Not deeply plush |
| Steady overnight cooling | - |

Details
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Price: Varies by size and promotion
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Height: 13 inches
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Type: Hybrid
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Firmness: Medium-firm; 6.5/10 in our test
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Construction: Two gel-foam layers over an 8-inch pocket-coil unit and base foam
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Coils: 768 in queen size, with heavier-gauge perimeter reinforcement
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Trial: 365 nights under the current official terms
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Warranty: Limited lifetime coverage under the current official terms

Review score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.6/5 | Kept the hips and lower back level |
| Cooling | 4.4/5 | Heat cleared faster than on dense foam |
| Pressure relief | 4.5/5 | Comfortable at the shoulders and hips |
| Motion isolation | 4.1/5 | Controlled most movement, but not all |
| Responsiveness | 4.2/5 | Easy position changes and quick recovery |
| Edge support | 4.5/5 | Secure for sitting and near-edge sleep |
| Durability | 4.4/5 | Reinforced construction and stable test feel |
| Overall score | 4.4/5 | The most balanced mattress in the group |
FlexiSpot U2

Our testing experience
The U2 expanded to 12.0 inches and registered 7.0 out of 10 for firmness. It held the body closer to the surface than the U3, with a 1.7-inch depression under the 44-pound weight. That shallower compression kept the hips level during back sleeping and made turning nearly effortless. After the weight was removed, the surface returned to 90% of its original height in 1.1 seconds.
Marcus preferred this support-forward feel on warm nights. The cover never felt actively cold, but the surface rose just 3.1°F during the 30-minute temperature test. The thinner comfort package also meant less room for the shoulder to settle. Side sleeping remained comfortable for shorter stretches, though anyone with sensitive shoulders will get more cushioning from the U3 or EGO Copper.
What we liked
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Level support that worked especially well for back sleeping
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Fast recovery that made position changes easy
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Less heat buildup than the all-foam EGO Copper
Who it is best for
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Back sleepers who want a stable, medium-firm surface
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Hot sleepers who dislike the close contour of dense foam
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Combination sleepers who value quick movement over plushness
Where it falls short
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Side sleepers with sensitive shoulders may need more cushioning
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Its coils transmit more movement than the all-foam model

Pros & Cons
| Pros | Cons |
|---|---|
| Steady, support-first feel | Limited shoulder cushioning |
| Good temperature control | Some motion transfer |
| Fast response | - |

Details
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Availability: Confirm with the retailer
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Height: 12 inches
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Type: Hybrid
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Firmness: Firm side of medium; 7.0/10 in our test
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Materials: Cooling gel foam over pocketed coils

Review score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.4/5 | Minimal midsection dip |
| Cooling | 4.3/5 | Low heat buildup for a cushioned hybrid |
| Pressure relief | 4.1/5 | Adequate, but firmer than U3 |
| Motion isolation | 4.0/5 | Controlled movement without eliminating it |
| Responsiveness | 4.3/5 | Quick recovery and easy turning |
| Edge support | 4.2/5 | Reliable for routine sitting |
| Durability | 4.2/5 | Held its feel through the test period |
| Overall score | 4.2/5 | Best for support over plushness |
FlexiSpot U1

Our testing experience
The U1 reached 10.0 inches and felt slightly firmer than the U2 at 7.2 out of 10. Its thinner top compressed 1.5 inches under the 44-pound weight, so the spine settled into a neutral position quickly during back sleeping. The surface also recovered promptly after turns, which helped it avoid the stuck-in-place sensation common to softer foam beds.
The trade-off appeared at the shoulder. Shoulder sink measured 2.0 inches during side-sleeping checks, less than on the U3, and pressure became noticeable during longer sessions. The surface warmed by 3.9°F after 30 minutes—still acceptable, but not as controlled as the U2. For a guest bed or a budget-first primary mattress, its simple, steady feel is easy to understand and broadly usable.
What we liked
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Stable support without deep sink
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Easy movement for sleepers who turn often
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A practical comfort profile for a guest room
Who it is best for
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Budget-focused shoppers who still want a hybrid
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Back sleepers and occasional stomach sleepers
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Guest rooms where easy movement matters more than plush cushioning
Where it falls short
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Pressure builds sooner for dedicated side sleepers
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Partner movement is more noticeable than on the EGO Copper

Pros & Cons
| Pros | Cons |
|---|---|
| Stable hybrid feel | Limited pressure relief |
| Quick movement | Noticeable motion transfer |
| Good guest-room value | - |

Details
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Availability: Confirm with the retailer
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Height: 10 inches
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Type: Hybrid
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Firmness: Firm side of medium; 7.2/10 in our test
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Materials: Blue gel memory foam over pocketed coils

Review score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.2/5 | Kept the spine level during back sleeping |
| Cooling | 4.1/5 | Good airflow, with some surface warmth |
| Pressure relief | 3.7/5 | Thin cushioning at shoulders and hips |
| Motion isolation | 3.8/5 | More transfer than thicker beds and foam |
| Responsiveness | 4.2/5 | Easy turning and quick recovery |
| Edge support | 4.0/5 | Stable enough for routine edge use |
| Durability | 4.0/5 | No meaningful change during testing |
| Overall score | 4.0/5 | A practical, firm-leaning value hybrid |
MLILY EGO Copper

Our testing experience
The EGO Copper felt like a 6.0 out of 10, with a slower and deeper contour than any of the hybrids. A 44-pound weight sank 2.4 inches at the center, and the foam took 3.8 seconds to regain 90% of its height after the weight was removed. That extra give reduced pressure at the shoulder and hip, and Mia could stay on her side longer without the joint discomfort she noticed on the U1.
Motion control was the clear advantage. In repeated drop tests, the far side registered an average peak acceleration of 0.18 g, the lowest result in the group. Edge compression reached 3.4 inches versus 2.5 inches at the center, which explains why sitting near the perimeter felt less secure. The surface also warmed 5.1°F over 30 minutes. Those weaknesses matter for edge-dependent or hot sleepers, but the bed is the best match here for pressure relief and a quiet shared surface.
What we liked
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The strongest motion isolation in the group
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Deeper contouring around the shoulders and hips
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A quiet surface that suits easily disturbed sleepers
Who it is best for
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Light sleepers who wake when a partner moves
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Side sleepers who need more pressure relief
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People who prefer slow-moving foam over coil bounce
Where it falls short
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The edge compresses more than the hybrid perimeters
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Heat clears more slowly than it does through a coil support core
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Position changes require more effort than on the U1 or U2

Pros & Cons
| Pros | Cons |
|---|---|
| Excellent motion isolation | Soft perimeter |
| Deep pressure relief | Slower movement |
| Quiet foam surface | More heat buildup |

Details
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Price: Varies by size and seller
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Type: Memory foam
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Firmness: Medium; 6.0/10 in our test
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Materials: Copper-gel memory foam, ventilated foam, and graphene cover
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Safety: The manufacturer describes the inner cover as fiberglass-free
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Terms: FlexiSpot lists a 30-day return policy and limited warranty; confirm the terms for the seller and configuration you choose

Review score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.0/5 | Comfortable for light and average weights |
| Cooling | 3.8/5 | Warmer than the three hybrids |
| Pressure relief | 4.6/5 | Best shoulder and hip cushioning |
| Motion isolation | 4.7/5 | Kept movement localized |
| Responsiveness | 4.0/5 | Slower recovery than the hybrids |
| Edge support | 3.6/5 | Noticeably softer at the perimeter |
| Durability | 4.0/5 | Consistent feel during the test period |
| Overall score | 4.1/5 | Best for motion control and pressure relief |
How Their Performance Scores Compare
| Mattress | Overall | Support | Pressure Relief | Cooling | Motion Isolation | Durability | Responsiveness | Edge Support |
|---|---|---|---|---|---|---|---|---|
| FlexiSpot U3 | 4.4/5 | 4.6/5 | 4.5/5 | 4.4/5 | 4.1/5 | 4.4/5 | 4.2/5 | 4.5/5 |
| FlexiSpot U2 | 4.2/5 | 4.4/5 | 4.1/5 | 4.3/5 | 4.0/5 | 4.2/5 | 4.3/5 | 4.2/5 |
| FlexiSpot U1 | 4.0/5 | 4.2/5 | 3.7/5 | 4.1/5 | 3.8/5 | 4.0/5 | 4.2/5 | 4.0/5 |
| MLILY EGO Copper | 4.1/5 | 4.0/5 | 4.6/5 | 3.8/5 | 4.7/5 | 4.0/5 | 4.0/5 | 3.6/5 |
The U3 has no serious weak point and earns the highest overall score. The U2 trails it mainly in pressure relief and edge stability, but responds faster. The U1 gives up cushioning and motion control to maintain a simple, firm-leaning feel. The EGO Copper reverses those priorities: it leads in pressure relief and motion isolation but ranks last for cooling and edge support.
Which Model Should You Choose?
Start with your sleep position, then consider heat, motion sensitivity, and edge use. The U3 suits the widest range of people and is the easiest recommendation for couples with different preferences. Choose the U2 if you sleep mostly on your back, run warm, and want quick movement. The U1 is the practical option for a guest room or a firm-leaning sleeper, provided current stock is available. Pick the EGO Copper if partner movement or side-sleeping pressure matters more than edge stability and airflow.
Where These Mattresses Fall Short
None of these models offers multiple firmness choices within the same construction. The hybrids cannot match the EGO Copper's motion isolation, while the EGO Copper cannot match the perimeter stability or airflow of the hybrids. U1 and U2 availability is also harder to confirm than U3 availability, so shoppers may need to check stock before comparing final prices. Dedicated side sleepers should approach the U1 cautiously, and people who sit near the edge every morning should think twice about the EGO Copper.
How FlexiSpot Compares With Popular Alternatives
The Nectar Premier Hybrid is a stronger alternative for shoppers who want a thicker mainstream hybrid with a more pronounced memory-foam comfort layer. It is a 13-inch model with a 365-night trial and Forever Warranty. It costs more than FlexiSpot's value-oriented options, but the active product line and established policy package are easier to evaluate before buying.
The DreamCloud Classic Hybrid is the closest alternative for a supportive, traditional hybrid feel. Its 12-inch build, quilted cover, and one-inch memory-foam layer create less of a deep foam hug than the Nectar Premier Hybrid. It also includes a 365-night trial and Forever Warranty, making it appealing to buyers who prioritize a long evaluation period.
The Brooklyn Bedding CopperFlex Hybrid is the most direct value competitor. Its 12-inch, medium-firm design combines copper-infused foam with encased coils and offers a 120-night trial plus a limited lifetime warranty. Its trial is shorter and returns carry a fee under the current terms, but buyers get an actively sold model with clearly listed construction and support details.
How to Get the Best Results
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Allow up to 48 hours for a compressed mattress to reach its full height before judging support.
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Use breathable sheets and a thin protector to preserve airflow through the sleep surface.
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Place the mattress on a rigid, evenly supported platform bed or foundation to limit extra motion and protect the edge.
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Test the perimeter by sitting and lying where you normally would, not by pressing it with one hand.
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Rotate the mattress from head to foot as the manufacturer recommends to promote more even long-term wear; do not flip a one-sided design.
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Give your body at least a few weeks to adjust before making a final comfort decision, while staying within the applicable mattress trial.
FAQs
Which mattress felt most balanced overall?
The FlexiSpot U3. It combined stable lumbar support, useful edge reinforcement, and enough cushioning for side sleeping without developing a serious weakness in another category.
Which mattress is best for motion-sensitive sleepers?
The MLILY EGO Copper. Its foam absorbed and localized impact better than the three hybrid models, though it also felt warmer and less stable at the edge.
Which model is easiest to move on?
The FlexiSpot U2 responded fastest while still offering more cushioning than the U1. Both felt easier to turn on than the slower-moving EGO Copper.
Which mattress should I avoid if I sit on the edge often?
The MLILY EGO Copper. Its perimeter compressed more than its center and felt less secure than the reinforced edge of the U3.