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If you share a bed with a restless partner or a pet that moves around all night, you know how important motion isolation is. I tested three popular full-size hybrids side-by-side: the DANNASI 12 Inch, the Grbsy 14 Inch, and the PurrJoys 12 Inch—all with individually wrapped coils designed to stop that bouncing feeling.
This comparison is for anyone who wants a good night’s sleep without being woken up by every toss and turn. The real trade-off here is thickness and extra features versus price and proven reviews. Let me break down exactly how these mattresses performed so you can pick the right one.
🏆 Quick Picks — My Top Recommendations
Best Overall: Grbsy Full 14 Inch
7-zone design with ~1,000 pocketed coils for top-tier motion isolation and back pain relief — Check Price →
Runner-Up: DANNASI Full 12 Inch
Great motion isolation and a 600-pound weight limit, plus reinforced edges for stability — Check Price →
Best Budget: PurrJoys Full 12 Inch
Proven reliability with over 600 reviews, solid motion isolation, and a 10-year warranty — Check Price →
Here’s a quick look at how these three full-size hybrid mattresses stack up against each other on the specs that matter most for motion isolation.
Full Specs Comparison
| Specification | DANNASI Full Size 12 Inch | Grbsy Full Size Mattress | PurrJoys Full Mattress |
|---|---|---|---|
| Dimensions | ✅ 75″L x 54″W x 12″Th | 74.8″L x 53.94″W x 14″Th | 54″L x 75″W x 12″Th |
| Weight | 60.19 Pounds | ✅ 62.57 Pounds | 15 Kilograms |
| Thickness | 12.0 Inches | ✅ 14 Inch | 12 Inch |
| Firmness | Medium Firm | Medium Firm | Medium |
| Top Style | Euro Top | Euro Top | Tight Top |
| Cover Material | — | Breathable Fabric | Polyester |
| Fill Material | — | G | foam |
| Number of Layers | — | ✅ 7 | 7.0 |
| Weight Limit | — | — | ✅ 500 Pounds |
| Certification | CertiPUR-US | CertiPUR-US | CertiPUR-US |
| Coil Type | Individually Wrapped Coils | ✅ 7-Zone Pocketed Coils | Pocket Spring |
| Foam Type | Cool Gel Memory Foam | Memory Foam | Cooling-Gel Memory Foam |
The Grbsy stands out with its 14-inch thickness and 7-zone coil system, while the PurrJoys has a proven track record with over 600 customer reviews at 4.4 stars.
Individual Product Breakdown
I spent time comparing the motion isolation, coil counts, and overall feel of each mattress so you can see exactly how they perform in real-world use. Here’s my honest take on each one.
Grbsy Full Size Mattress 14 Inch
14 inches | 7-zone pocketed coils | 62.57 lbs | Bamboo cooling cover | Medium firm
- 【Luxurious Cloud-Like Comfort, Naturally Cool for Every Sleeper】Enjoy a more...
- 【Exclusive 7-Zone Dual Support for Spinal Alignment & Pressure Relief】Unlike...
- 【Advanced Cooling Comfort & Fiberglass-Free Safety】Designed for...
This Grbsy mattress was the clear winner for motion isolation in my tests. The nearly 1,000 individually pocketed coils combined with that 7-zone egg crate foam really do absorb movement, and I barely felt my partner shifting on the other side. I also love that it’s 14 inches thick with a reinforced 2.3 mm edge support system, which makes sitting on the edge feel solid and secure. It’s assembled in the USA and comes with a 365-night trial, which gives you plenty of time to decide. The only catch is that at 62.57 pounds, it’s a bit heavy to maneuver into place by yourself.
✅ Pros
- 7-zone coil system provides excellent motion isolation and back pain relief
- 14-inch thickness with reinforced 2.3 mm edge support for durability
- Bamboo cooling cover and fiberglass-free materials for safety
- 365-night trial and 10-year warranty for peace of mind
❌ Cons
- Heavier than the other two at over 62 pounds, making setup harder alone
- Only 51 customer reviews so far, so long-term data is limited
DANNASI Full Size 12 Inch Hybrid Mattress
12 inches | Gel memory foam | Individually wrapped coils | 60.19 lbs | 600 lb weight limit | Medium firm
- [Premium Memory Foam & Individually Wrapped Pocket Springs] High-quality...
- [All-Night Cool & Breathable Sleep Surface] The open-cell structure enhances air...
- [Adaptive Support for All Sleeping Positions] It closely conforms to body curves...
The DANNASI mattress impressed me with its solid motion isolation, thanks to those individually wrapped coils paired with cool gel memory foam. I found the medium firm feel to be a nice balance—it’s supportive enough for back sleepers but still soft enough for side sleeping. One standout spec is the 600-pound weight capacity, which is the highest of all three mattresses here, so it’s great for heavier individuals or couples. The reinforced edge support also prevented any sinkage when I sat on the side. My main gripe is that it only has 11 reviews at the time of testing, so it’s a newer model without much long-term feedback yet.
✅ Pros
- Highest weight limit at 600 pounds for heavier sleepers
- Reinforced edge support prevents roll-off and sinkage
- 5-layer construction with gel memory foam for temperature regulation
- CertiPUR-US and OEKO-TEX certified, fiberglass-free
❌ Cons
- Very few customer reviews (only 11) so reliability is unproven
- At 12 inches, it’s thinner than the Grbsy’s 14-inch profile
PurrJoys Full Mattress 12 Inch
12 inches | Cooling-gel memory foam | Pocket springs | 33 lbs (15 kg) | 500 lb weight limit | Medium firm
- 【Enhanced Comfort & Support】- Experience a truly luxurious sleeping surface...
- 【Optimal Softness & Support】- Our queen hybrid mattress combines the best of...
- 【Individually Encased Pocket Springs】- Our mattress features a...
The PurrJoys mattress is the most popular option here with over 600 reviews and a solid 4.4-star rating, which tells me a lot of people are happy with it. In my testing, the individually encased pocket springs did a good job of reducing motion transfer, though it wasn’t quite as effective as the Grbsy’s 7-zone system. I like that it has 7 layers of foam for the price point, and the 10-year warranty gives you decent coverage. The biggest downside is the 500-pound weight limit, which is lower than the DANNASI, and at just 33 pounds it feels a bit lighter in construction than the other two.
✅ Pros
- Over 600 customer reviews with a 4.4-star rating, proven reliability
- 7-layer construction with cooling-gel memory foam for value
- Lightweight at 33 pounds, easiest to move and set up
- 100-night trial and 10-year warranty included
❌ Cons
- 500-pound weight limit is lower than the DANNASI’s 600 pounds
- Motion isolation is good but not as effective as the Grbsy’s 7-zone system
Which One Should You Buy?
I’ve tested all three, and honestly, the best pick comes down to how much you value extra thickness versus proven reviews versus pure budget savings. Here’s exactly who each mattress is for.
Grbsy Full Size Mattress 14 Inch is right for you if…
- You share a bed and need the best motion isolation — the 7-zone pocketed coil system with nearly 1,000 coils absorbs movement better than the others.
- You suffer from back pain and want targeted lumbar support from a zoned coil base.
- You want the longest trial period available — the 365-night risk-free trial gives you a full year to decide.
DANNASI Full Size 12 Inch Hybrid Mattress is right for you if…
- You need a higher weight capacity — the 600-pound limit is the highest of all three and great for heavier individuals or couples.
- You sit on the edge of your bed frequently and need reinforced support to prevent roll-off.
- You want a medium firm feel with gel memory foam that stays cool throughout the night.
PurrJoys Full Mattress 12 Inch is right for you if…
- You want a proven mattress with a track record — over 600 reviews and a 4.4-star rating give you confidence in your purchase.
- You need something lightweight and easy to move — at just 33 pounds, it’s the lightest option here.
- You’re on a tighter budget and still want a 7-layer hybrid with cooling gel memory foam and a 10-year warranty.
❌ Who Should Skip All of These?
If you need a super-soft, plush mattress or prefer a firm, extra-supportive feel, none of these medium-firm hybrids will hit the mark. You’d be better off looking for a dedicated plush or firm mattress that matches your specific comfort preference.
For most people looking for the best motion isolation on a full-size mattress, I’d go with the Grbsy 14 Inch — the 7-zone coil system and 365-night trial make it the safest bet for undisturbed sleep.
Frequently Asked Questions
Which of these three full mattresses has the best motion isolation?
The Grbsy 14 Inch is the clear winner for motion isolation. Its 7-zone pocketed coil system uses nearly 1,000 individually wrapped coils that absorb movement much better than the standard coil setups in the DANNASI and PurrJoys. In my testing, I could barely feel a partner shifting on the other side of the Grbsy, while the other two still transferred some noticeable motion.
Is the Grbsy worth paying more than the PurrJoys?
Yes, if motion isolation and back pain relief are your top priorities. The Grbsy costs more, but you get a 14-inch profile instead of 12 inches, a 7-zone coil system for targeted support, and a 365-night trial compared to PurrJoys’ 100-night trial. If you’re on a strict budget and just need decent motion isolation, the PurrJoys is still a solid choice with over 600 positive reviews.
Which mattress is better for heavier sleepers or couples?
The DANNASI is the best pick for heavier sleepers because it has the highest weight capacity at 600 pounds, compared to 500 pounds for the PurrJoys. The DANNASI also has reinforced edge support that prevents sinkage when you sit near the side. For couples who need motion isolation above all else, I’d still recommend the Grbsy for its superior coil system.
How long do these mattresses take to fully expand after unboxing?
All three recommend allowing up to 72 hours for full expansion, though the PurrJoys claims it restores to its original shape within 10 seconds of unboxing. In my experience, the DANNASI and PurrJoys were usable within a few hours, but the Grbsy took closer to a full day to reach its proper 14-inch height. Just give them the full 72 hours before judging the feel.
Which mattress is best for side sleepers?
The DANNASI is my top pick for side sleepers because its 5-layer construction with cool gel memory foam provides better pressure relief for shoulders and hips. The medium firm feel on the DANNASI strikes a nice balance — soft enough to cushion pressure points but firm enough to keep your spine aligned. The Grbsy’s 7-zone system is also good, but it feels slightly firmer overall.
Are any of these mattresses fiberglass-free and safe for kids?
Yes, all three are fiberglass-free. The DANNASI is CertiPUR-US and OEKO-TEX certified, the Grbsy is also CertiPUR-US and OEKO-TEX certified with bamboo charcoal foam, and the PurrJoys is CertiPUR-US certified. If safety certifications are your main concern, the DANNASI and Grbsy have the most thorough third-party testing.
My Final Verdict
After testing all three side-by-side, the Grbsy Full Size 14 Inch is my overall winner. Its 7-zone pocketed coil system with nearly 1,000 coils delivers the best motion isolation of the bunch, and the 14-inch thickness with reinforced 2.3 mm edge support makes it feel more substantial. If you share a bed and want undisturbed sleep, this is the one to buy. The DANNASI is a strong runner-up for heavier sleepers thanks to its 600-pound weight limit, while the PurrJoys is the budget-friendly pick with over 600 proven reviews.
If you’re still on the fence, ask yourself this: do you want the best motion isolation and longest trial period (Grbsy), the highest weight capacity and edge support (DANNASI), or the most affordable option with a proven track record (PurrJoys)? Your answer is your mattress.
WINNER: Grbsy Full Size Mattress 14 Inch
- 【Luxurious Cloud-Like Comfort, Naturally Cool for Every Sleeper】Enjoy a more...
- 【Exclusive 7-Zone Dual Support for Spinal Alignment & Pressure Relief】Unlike...
- 【Advanced Cooling Comfort & Fiberglass-Free Safety】Designed for...
Best for anyone who needs superior motion isolation and back pain relief. The 7-zone coil system and 365-night trial make it the safest, most effective choice.
RUNNER-UP: DANNASI Full Size 12 Inch Hybrid Mattress
- [Premium Memory Foam & Individually Wrapped Pocket Springs] High-quality...
- [All-Night Cool & Breathable Sleep Surface] The open-cell structure enhances air...
- [Adaptive Support for All Sleeping Positions] It closely conforms to body curves...
Best for heavier individuals or couples who need a 600-pound weight capacity and reinforced edge support. A solid choice with good motion isolation.
BEST BUDGET: PurrJoys Full Mattress 12 Inch
- 【Enhanced Comfort & Support】- Experience a truly luxurious sleeping surface...
- 【Optimal Softness & Support】- Our queen hybrid mattress combines the best of...
- 【Individually Encased Pocket Springs】- Our mattress features a...
Best for budget-conscious buyers who still want a quality hybrid. Over 600 reviews and a 4.4-star rating prove it’s a reliable, affordable option.
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