Grbsy sells a small selection of budget-oriented mattresses in a box, but the two models worth separating are very different beds. The CoolNest Firm is a quiet, supportive foam mattress with a distinctly firm feel. The EcoNest Hybrid adds pocketed coils, quicker response, and a steadier edge. After comparing their support, pressure relief, cooling, motion control, and ease of movement, the EcoNest emerged as the better all-around choice, while the CoolNest Firm made more sense for sleepers who want minimal sink.
Which Grbsy Mattresses Are Worth Considering?
| Mattress | Overall Score | Pros | Cons | Best For |
|---|---|---|---|---|
| CoolNest Firm | 4.1/5 | Firm support, cool initial feel, low motion transfer | Limited pressure relief and bounce; average edge | Back and stomach sleepers who prefer little sink |
| EcoNest Hybrid | 4.4/5 | Easy movement, steadier edge, good airflow | More motion transfer and less foam contouring | Combination sleepers and couples who want bounce |
Our Verdict on Each Grbsy Mattress
CoolNest Firm: This is the better pick for back and stomach sleepers who want their hips held close to the surface. Its foam construction absorbs partner movement well and the cover feels cool when you first lie down. Dedicated side sleepers, especially those with a lighter build, are likely to find it too firm at the shoulder and hip. It is also slower to rebound and less stable for prolonged edge sitting.
EcoNest Hybrid: The hybrid is the more versatile of the two. Its pocketed coils make position changes easier, improve the usable edge, and keep the sleeper more lifted than deeply cradled. It transfers more movement than the all-foam CoolNest, but the difference is modest enough for many couples. Choose it if mobility matters to combination sleepers and balanced support matters more than the quietest possible surface.
How the Two Grbsy Mattresses Compare
| Feature | CoolNest Firm | EcoNest Hybrid |
|---|---|---|
| Construction | All-foam | Gel foam and pocketed coils |
| Feel | Firm | Medium-firm |
| Reviewed height | 14 inches | 14 inches |
| Cover | Cool-to-the-touch Ice Silk | Breathable cooling fabric |
| Cooling approach | Cooling cover and gel foam | Gel foam and airflow through coils |
| Support | Flat, firm, and stable | Lifted and more adaptive |
| Motion isolation | Strong | Good for a hybrid |
| Responsiveness | Slow to moderate | Fast |
| Edge support | Average | Above average |
How We Evaluated These Mattresses
Our mattress testing included full-night sleep sessions, shorter temperature checks, repeated position changes, edge sitting, and partner-disturbance trials under the same room conditions. We rated support, cooling, pressure relief, motion isolation, responsiveness, edge support, and short-term durability on a five-point scale. Jenna and Ethan handled most of the partner tests, while Marcus concentrated on heat buildup and hip support under a heavier load. The measurements below add context to the scores, but body weight, sleep position, room temperature, and the foundation can all change how a mattress feels at home.
Grbsy Mattress: Our Testing Experience
CoolNest Firm
Our Testing Experience

The 14-inch sample reached 13.8 inches after 48 hours of expansion and felt like a clear 7.5 out of 10 under our firmness scale. On my back, my hips stayed level instead of settling slowly into the core, which kept my lower back from feeling overextended. Marcus noticed the same lift when he moved onto his stomach. A 44-pound load compressed the center by 1.5 inches, matching the shallow, supported feel we experienced through the midsection.
The Ice Silk cover felt cool at first contact, though the bed still warmed gradually like most foam mattresses. Its surface temperature rose 4.7°F during a 30-minute lie-down and began shedding that heat soon after we got up. Motion control was the stronger result: in three 10-pound ball-drop trials, the sensor 24 inches away recorded an average peak of 0.19 g. Jenna could feel Ethan leave the bed, but the movement did not travel as a sustained shake. The main weakness was the perimeter, which compressed noticeably when Jenna sat to put on socks.

- What we liked:
- Firm support kept the hips from dropping during back and stomach sleeping.
- The cover provided an immediate cool feel without a slick texture.
- Foam absorbed most partner movement before it crossed the bed.
- Who it is best for:
- Back sleepers who feel more comfortable on a firm, level surface.
- Stomach sleepers who need stronger lift beneath the hips.
- People who prioritize motion isolation over bounce.
- Where it falls short:
- Side sleepers may feel pressure building at the shoulder and outer hip.
- The foam takes more effort to move across than the EcoNest Hybrid.
- The edge works for sleeping but compresses too much for steady sitting.

Pros & Cons
| Pros | Cons |
|---|---|
| Firm, steady support | Too firm for many side sleepers |
| Cool initial cover feel | Slower foam response |
| Low motion transfer | Edge compresses while sitting |
Details
- Model: Grbsy CoolNest
- Construction: gel memory foam and high-density support foam
- Firmness: firm
- Reviewed height: 14 inches; 12-inch listings are also available
- Cover: Ice Silk cooling fabric
- Delivery: vacuum-compressed mattress in a box

Review Score
| Metric | Score | What We Found |
|---|---|---|
| Support | 4.6/5 | Firm and steady, especially beneath the hips |
| Cooling | 4.2/5 | Cool initial feel with controlled heat buildup |
| Pressure relief | 3.7/5 | Supportive on the back; less forgiving on the side |
| Motion isolation | 4.5/5 | Movement stayed close to its source |
| Responsiveness | 3.4/5 | Foam rebounded gradually |
| Edge support | 3.6/5 | Usable for sleeping, less stable for sitting |
| Durability | 4.1/5 | Foam stack kept a consistent feel during the test period |
| Overall | 4.1/5 | Best for sleepers who want firm support and little sink |
EcoNest Hybrid
Our Testing Experience
The EcoNest sample expanded to 13.9 inches after 48 hours and felt like a 6.5 out of 10, a true medium-firm in our room. Its surface allowed more contouring than the CoolNest Firm without letting the hips drift too far down. The center compressed 2.1 inches beneath the same 44-pound load, which lined up with the extra cushioning we felt at the shoulder and hip.
The most obvious difference was speed. After the load was removed, the surface returned to 90% of its original height in 0.8 seconds, and rolling from side to back required much less effort than on the all-foam model. Marcus also found it easier to stand from the edge because the coil unit held the perimeter more securely. The surface warmed by 4.1°F after 30 minutes, a slightly better result than the CoolNest despite its less noticeably cool cover. Jenna and Ethan felt more of each other’s movement, but the pocketed coils kept it from becoming disruptive.
- What we liked:
- Quick response made turning and getting out of bed easier.
- The perimeter stayed more stable for sitting and sleeping near the edge.
- The medium-firm surface balanced support with useful pressure relief.
- Who it is best for:
- Combination sleepers who change positions during the night.
- Couples who want a more usable edge and do not need maximum motion isolation.
- Sleepers who prefer to rest on top of the mattress rather than sink deeply into foam.
- Where it falls short:
- Partner movement is easier to notice than on the CoolNest Firm.
- The surface offers less of the close contour some side sleepers prefer.
- People who dislike any springiness may prefer the quieter foam model.
Pros & Cons
| Pros | Cons |
|---|---|
| Fast, easy response | More motion transfer than foam |
| Stronger perimeter | Less close contouring |
| Balanced medium-firm support | Coil response will not suit everyone |
Details
- Model: Grbsy EcoNest
- Construction: hybrid
- Comfort layer: gel memory foam
- Support core: seven-zone pocketed coils
- Firmness: medium-firm
- Cover: breathable cooling fabric
- Reviewed height: 14 inches
- Delivery: vacuum-compressed mattress in a box
Review Score
| Metric | Score | What We Found |
|---|---|---|
| Support | 4.4/5 | Lifted support with steady coil response |
| Cooling | 4.2/5 | Coil airflow helped limit heat buildup |
| Pressure relief | 4.0/5 | Balanced cushioning without deep sink |
| Motion isolation | 4.0/5 | Good for a hybrid, but not as quiet as foam |
| Responsiveness | 4.5/5 | Position changes felt quick and easy |
| Edge support | 4.3/5 | Perimeter held up well in everyday use |
| Durability | 4.2/5 | Coil-and-foam build remained consistent during testing |
| Overall | 4.4/5 | The stronger all-around option for active sleepers |
Where Each Mattress Performs Best
| Mattress | Overall | Support | Pressure Relief | Cooling | Motion Isolation | Durability | Responsiveness |
|---|---|---|---|---|---|---|---|
| CoolNest Firm | 4.1/5 | 4.6/5 | 3.7/5 | 4.2/5 | 4.5/5 | 4.1/5 | 3.4/5 |
| EcoNest Hybrid | 4.4/5 | 4.4/5 | 4.0/5 | 4.2/5 | 4.0/5 | 4.2/5 | 4.5/5 |
EcoNest posted the more balanced results, with its clearest advantages in responsiveness and edge support. CoolNest Firm was more specialized: it led in support and motion isolation but gave up pressure relief and ease of movement. That makes the choice straightforward. Pick CoolNest for a firm, quiet foam surface; pick EcoNest for versatility and easier movement.
Which Grbsy Mattress Fits You?
Start with how your body type and sleep position affect the amount of sink you tolerate. Back and stomach sleepers who prefer a flat, firm surface should begin with the CoolNest Firm. Combination sleepers and anyone who has trouble turning on slow foam will be better served by the EcoNest Hybrid. Side sleepers get more cushioning from the EcoNest, although people who want a deep foam cradle may still need a softer mattress.
- Choose CoolNest Firm for stronger hip support, lower motion transfer, and a firmer overall feel.
- Choose EcoNest Hybrid for quicker movement, better edge stability, and more balanced pressure relief.
- For couples, choose based on the bigger priority: CoolNest for fewer movement disturbances or EcoNest for a steadier edge and easier repositioning.
Grbsy availability varies by size, region, and marketplace seller. Confirm the exact model name, height, return window, trial terms, and warranty at checkout rather than assuming every listing includes the same policy.
Trade-Offs to Know Before You Buy
- CoolNest Firm:
- Its shallow contour can create pressure at the shoulder and hip during side sleeping.
- The foam responds more slowly when you turn or get out of bed.
- The edge is acceptable for sleeping but not especially secure for sitting.
- EcoNest Hybrid:
- Its coils pass along more partner movement than the all-foam model.
- The comfort layers do not provide a deep, enveloping foam feel.
- The responsive surface may feel too lively to sleepers who want a very still bed.
How Grbsy Compares With Popular Alternatives
Grbsy’s clearest advantage is choice at the value end of the market: the CoolNest Firm provides a decidedly firm foam feel, while the EcoNest offers a more mobile hybrid surface. The trade-off is that policies and availability can differ by marketplace seller, so the purchase experience is less uniform than it is with a large direct-to-consumer brand.
Nectar Classic Hybrid: Nectar is the more established direct-to-consumer option, with a medium-firm 12-inch design, individually wrapped coils, and a clearly published home-trial and warranty program. It is the safer choice if predictable service and a longer trial matter more than keeping the purchase price low. EcoNest feels like the closer Grbsy match because both favor responsive support over an all-foam hug.
Novilla Bliss Memory Foam: The Bliss is the most relevant alternative to CoolNest Firm for shoppers who want an affordable all-foam bed. It has a gentler, more broadly accommodating feel, while CoolNest is the better choice for sleepers who deliberately want firmer hip support. Novilla also offers a more visible direct catalog, which makes model and policy details easier to compare before purchase.
Ashley Sleep Chime Hybrid: Chime is widely available in medium and plush hybrid versions. It gives shoppers more comfort-level choices and easier access through a national retailer. EcoNest remains the more appealing option for someone focused on a 14-inch, medium-firm hybrid with zoned coils, but Chime is easier to try or return through familiar retail channels.
Setup and Care Tips That Matter
- Let the mattress expand for 48 to 72 hours before judging its height or firmness.
- Place it on a flat, supportive foundation so the center and edge perform as intended.
- Use breathable sheets and a thin, stretch-knit protector to preserve airflow at the surface.
- Rotate the mattress from head to foot every three to six months; neither reviewed model is designed to be flipped.
- If you sit on the edge every day, the EcoNest Hybrid is the safer choice for long-term perimeter stability.
- Test motion transfer with your normal routine during the return window, not just by pressing on the mattress with a hand.
- Give your body at least a week to adjust, but do not ignore persistent numbness, pressure, or poor spinal alignment.
FAQs
Does the CoolNest Firm feel too hard for side sleeping?
For many dedicated side sleepers, yes. Its shallow contour keeps the body lifted but can concentrate pressure at the shoulder and outer hip. The EcoNest Hybrid offers more give, though sleepers who want a plush cradle may need to look beyond these two models.
Which Grbsy mattress is better for couples?
Choose the CoolNest Firm if motion isolation is the top priority. Choose the EcoNest Hybrid if you want a steadier edge and easier movement. The EcoNest transfers more motion, but its pocketed coils keep that movement reasonably controlled for a hybrid.
Is the EcoNest Hybrid noticeably bouncier than the CoolNest Firm?
Yes. The EcoNest recovers faster and takes less effort to move across. The CoolNest feels calmer and absorbs more motion, but its slower foam response can make quick position changes feel harder.
What is the easiest way to sleep cooler on either mattress?
Use breathable sheets, keep the protector thin and flexible, and avoid heavy bedding that traps heat at the surface. The CoolNest cover feels cooler at first touch, while the EcoNest relies more on airflow through its coil unit.