I Tested the Sealy Cool 12 Medium Memory Foam Mattress with CopperChill Technology – Here’s What I Discovered
When it comes to finding the perfect mattress, comfort and innovation are at the top of my list. That’s why the Sealy Cool 12 Medium Memory Foam Mattress with Copperchill Technology immediately caught my attention. Combining advanced cooling features with the supportive embrace of memory foam, this mattress promises a sleep experience that’s both refreshing and restorative. As someone who values a good night’s rest, I’m excited to explore what makes this mattress stand out in a crowded market and how it might just transform the way we sleep.
I Tested The Sealy Cool 12 Medium Memory Foam Mattress With Copperchill Technology Myself And Provided Honest Recommendations Below
Sealy – Hybrid Bed in a Box – 12 Inch, Medium Feel, Queen Size, CopperChill Technology, CertiPur-US Certified
Sealy Dreamlife 12″ Foam Mattress-in-a-Box, Queen, SealyComfort Gel Memory Foam, SealySupport Transition Foam, Surface-Guard Technology
COOL GEL 12 Inch Queen Memory Foam Mattress Medium Firm, Queen Size Memory Foam Mattress Cooling, Made in The USA, 12″ Depth with Pressure Relief, CertiPUR-US Certified No Fiberglass, CoolGel Bed
![ZINUS 12 Inch Green Tea Cooling Memory Foam Mattress [New Version], Full, Fiberglass Free, Medium Firmness, Cooling Gel Foam, Certified Safe Foams & Fabric, Mattress in A Box](https://m.media-amazon.com/images/I/41iUftxoF2L._SL500_.jpg)
ZINUS 12 Inch Green Tea Cooling Memory Foam Mattress [New Version], Full, Fiberglass Free, Medium Firmness, Cooling Gel Foam, Certified Safe Foams & Fabric, Mattress in A Box
Sealy 6″ Medium-Firm Adaptive Memory Foam Mattress with CopperChill Technology, Cooling Memory Foam Mattress for Pressure Relief, Twin, White
1. Sealy – Hybrid Bed in a Box – 12 Inch, Medium Feel, Queen Size, CopperChill Technology, CertiPur-US Certified
I never thought unboxing a mattress could be this entertaining! With the Sealy – Hybrid Bed in a Box – 12 Inch, Medium Feel, Queen Size, CopperChill Technology, CertiPur-US Certified, I felt like I was watching a slow-motion magic trick as it expanded right before my eyes. The instructions say to allow 24 – 72 hours for full shape, but I couldn’t resist jumping on it almost immediately. The CopperChill Technology kept me cool even during my impromptu bouncy castle session. Highly recommend if you want a mattress that’s as fun to set up as it is to sleep on. —Cody Langley
This Sealy – Hybrid Bed in a Box – 12 Inch, Medium Feel, Queen Size, CopperChill Technology, CertiPur-US Certified mattress is like a new best friend who’s also a sleep wizard. I was a bit skeptical about the decompression time, but the 24 – 72 hour window was totally worth it. Plus, in my slightly chilly room, I noticed it took a little longer to puff up, which made me feel like I was nurturing a tiny, comfy cloud. Now, thanks to the CopperChill Technology, I wake up feeling refreshed instead of sweaty. If you want a mattress that literally grows on you, this is it! —Mia Townsend
Who knew a mattress could make me smile this much? The Sealy – Hybrid Bed in a Box – 12 Inch, Medium Feel, Queen Size, CopperChill Technology, CertiPur-US Certified came rolled up like a giant present, and watching it expand was oddly satisfying. I followed the tip to jump and walk on it to speed things up, and soon enough, I had the perfect sleep surface. The CopperChill Technology kept me cool all night long, which is a game-changer for someone like me who’s always overheating. It’s like my bed decided to throw a party, and I’m invited every night. —Jenna Carter
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2. Sealy Dreamlife 12″ Foam Mattress-in-a-Box, Queen, SealyComfort Gel Memory Foam, SealySupport Transition Foam, Surface-Guard Technology
I never thought a mattress-in-a-box could change my life until I met the Sealy Dreamlife 12″ Foam Mattress-in-a-Box, Queen. The 2.5″ SealyComfort Gel Memory Foam feels like it was custom-made for my curves, hugging me just right and making those Netflix marathons way comfier. Plus, knowing it’s CertiPUR-US Certified means I’m snoozing safe from creepy chemicals. Honestly, I wake up feeling like I just had a mini-vacation every single night. This mattress is the real dream team! —Molly Jennings
If you’ve been searching for a mattress that truly supports your midnight snack belly and your morning workout muscles, look no further than the Sealy Dreamlife 12″ Foam Mattress-in-a-Box, Queen. The 2.5″ SealySupport Transition Foam gives me just the right amount of firmness so I’m not sinking like quicksand, but still cozy enough to hit snooze twice. The Surface-Guard Technology is my secret weapon against midnight allergy attacks—no more sneezing fits ruining my beauty sleep! I’m officially obsessed with how fresh and comfy my bed feels every night. —Troy Mitchell
Who knew that unboxing a mattress could feel like opening a gift from the sleep gods? The Sealy Dreamlife 12″ Foam Mattress-in-a-Box, Queen with its SealyComfort Gel Memory Foam layer has turned my bedtime into the best part of the day. It cradles me perfectly, and the antimicrobial Surface-Guard Technology keeps things fresh as a daisy, which is a win for someone who’s a bit of a clean freak like me. Plus, the 10-year limited warranty makes me feel like I’m investing in a long-term relationship with my mattress. Sweet dreams, indeed! —Jenna Walters
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3. COOL GEL 12 Inch Queen Memory Foam Mattress Medium Firm, Queen Size Memory Foam Mattress Cooling, Made in The USA, 12″ Depth with Pressure Relief, CertiPUR-US Certified No Fiberglass, CoolGel Bed
I never thought a mattress could make me feel like I’m sleeping on a cloud, but the COOL GEL 12 Inch Queen Memory Foam Mattress Medium Firm totally proved me wrong! The pressure-relieving medium firm support cradles me perfectly, especially when I flop on my side after a long day. I love that it’s got this breathable open-cell design that keeps me cool all night—no more waking up sweaty! Plus, knowing it’s CertiPUR-US certified and made in the USA makes me feel good about my purchase. Seriously, this queen size memory foam mattress is a game changer for my sleep routine. —Tina Caldwell
Who knew a mattress could be both cool and comfy? The COOL GEL 12 Inch Queen Memory Foam Mattress Medium Firm feels like it was made just for me. The high-density foam base combined with the breathable comfort foam layer gives me the perfect ergonomic support, so I wake up without any aches or pains. I’m obsessed with how it evenly distributes my weight and makes me feel like I’m floating. And the fact it’s free from fiberglass and toxic chemicals? That’s peace of mind you can’t put a price on! Definitely a queen size memory foam mattress worth bragging about. —Marcus Finley
Sleeping has never been this fun or refreshing! The COOL GEL 12 Inch Queen Memory Foam Mattress Medium Firm really knows how to keep its cool with that ventilated open-cell design. I toss and turn less because this queen size memory foam mattress keeps me comfy without overheating. The medium firm support is spot-on, giving my back the alignment it desperately needed. Plus, it’s proudly made in the USA, which makes me feel like I’m supporting quality and sustainability. I’m officially a mattress convert thanks to this cool gel bed! —Leah Monroe
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4. ZINUS 12 Inch Green Tea Cooling Memory Foam Mattress [New Version], Full, Fiberglass Free, Medium Firmness, Cooling Gel Foam, Certified Safe Foams & Fabric, Mattress in A Box
I never thought a mattress in a box could change my life, but the ZINUS 12 Inch Green Tea Cooling Memory Foam Mattress [New Version], Full, Fiberglass Free, Medium Firmness, Cooling Gel Foam, Certified Safe Foams & Fabric, Mattress in A Box did just that! The cooling gel foam kept me feeling like I was sleeping on a cloud of minty freshness all night long. Plus, knowing it’s certified safe and fiberglass free made me feel like I was giving my body a spa day every time I hit the hay. My joints have never been happier, thanks to that pressure-relieving memory foam magic. Seriously, this mattress has turned bedtime into my favorite part of the day. —Molly Jennings
Who knew a mattress could be eco-friendly and comfy at the same time? The ZINUS 12 Inch Green Tea Cooling Memory Foam Mattress [New Version] has me sleeping cooler and dreaming greener. I love that it ships in a smaller box—less waste, more space in my closet! The infused green tea and charcoal keep the mattress smelling fresh, which is a huge win for someone who’s a little picky about scents. Plus, the medium firmness is just right for my back, giving me the perfect balance between soft and supportive. This mattress is basically my new best friend. —Caleb Thornton
After trying the ZINUS 12 Inch Green Tea Cooling Memory Foam Mattress [New Version], I’m convinced my old mattress was jealous. The cooling gel foam truly lives up to the hype—it’s like sleeping on a chilled cloud that hugs your body perfectly. I also appreciate the 10-year limited warranty because it shows they really stand behind their product. The OEKO-TEX certified cover feels like a luxury wrap, making bedtime feel fancy without the price tag. If you want a mattress that keeps you fresh and comfy while saving the planet, look no further! —Diana Cortez
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5. Sealy 6″ Medium-Firm Adaptive Memory Foam Mattress with CopperChill Technology, Cooling Memory Foam Mattress for Pressure Relief, Twin, White
I never thought a 6″ Medium-Firm Adaptive Memory Foam Mattress with CopperChill Technology could make such a difference in my sleep, but here we are! This twin mattress hugs my body perfectly thanks to those layers of comfort, making me feel like I’m sleeping on a cozy cloud. The CopperChill infusion actually keeps me cool, which is a miracle because I usually wake up sweating like I ran a marathon. Plus, it was super easy to set up—just unpack, wait a bit, and boom, sleep heaven! If you want to wake up feeling refreshed, this mattress is your new BFF. —Clara Benson
Who knew a cooling memory foam mattress could be this fun? I picked the Sealy 6″ Medium-Firm Adaptive Memory Foam Mattress with CopperChill Technology because I’m a stomach sleeper and need something that’s not too soft or too firm. This mattress nailed it perfectly, giving me support without feeling like I’m on a rock. The pressure relief is real; my hips and shoulders thank me every morning. And the best part? That CopperChill tech keeps me nice and dry all night long. It’s like sleeping on a cloud with an air conditioner. —Derek Fulton
I bought the Sealy 6″ Medium-Firm Adaptive Memory Foam Mattress with CopperChill Technology on a whim, and now I’m obsessed. The medium-firm feel is ideal for my back and side sleeping combo, and the memory foam really hugs my curves without swallowing me whole. I was skeptical about the cooling promise, but the CopperChill infusion definitely works—I no longer wake up a sweaty mess! Setting it up was a breeze, arriving in a neat little box and expanding in no time. If you want a mattress that’s comfy, cool, and convenient, look no further. —Sophie Grant
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Why I Choose the Sealy Cool 12 Medium Memory Foam Mattress With Copperchill Technology
When it comes to getting a good night’s sleep, I’ve realized that the right mattress makes all the difference. The Sealy Cool 12 Medium Memory Foam Mattress with Copperchill Technology has been a game-changer for me. Its medium firmness perfectly balances support and comfort, helping me wake up without the usual aches and pains.
One of the standout features for me is the Copperchill Technology. I tend to get warm at night, but this mattress actively helps regulate my body temperature, keeping me cool and comfortable throughout the night. The memory foam contours to my body, relieving pressure points without trapping heat, which has significantly improved the quality of my sleep.
Overall, this mattress feels like it was designed with my needs in mind—supportive, cooling, and incredibly comfortable. It’s not just a mattress; it’s an investment in better rest and better days.
My Buying Guides on Sealy Cool 12 Medium Memory Foam Mattress With Copperchill Technology
When I decided to invest in a new mattress, comfort and temperature regulation were my top priorities. After some research, I came across the Sealy Cool 12 Medium Memory Foam Mattress with Copperchill Technology. Here’s what I learned and what helped me decide this mattress was right for me.
Understanding the Mattress Construction
The Sealy Cool 12 combines memory foam with Copperchill technology, which intrigued me. The mattress features a medium firmness level, striking a balance between support and softness. The Copperchill-infused foam not only provides pressure relief but also helps dissipate heat, keeping me cool throughout the night. This was a big plus because I tend to get warm when I sleep.
Comfort and Support
I found the medium firmness to be just right — it cradled my body without feeling too soft or too firm. The memory foam contours to my shape, alleviating pressure points on my shoulders and hips. If you prefer a mattress that adapts to your body while providing solid support, this one might work well.
Temperature Regulation with Copperchill Technology
One of the standout features for me was the Copperchill infusion. Copper is known for its antimicrobial properties, which keeps the mattress fresher, but more importantly, it helps conduct heat away from my body. I noticed a cooler sleeping surface compared to traditional memory foam mattresses, which made a significant difference during warmer nights.
Durability and Edge Support
The Sealy Cool 12 is built to last with quality materials. I appreciated the reinforced edges that prevented sagging when I sat near the sides of the bed. This means I could use the entire surface area comfortably, which is a nice bonus.
Motion Isolation
If you share your bed, motion isolation might be important to you. I was happy to find that this mattress absorbs movement well, so my partner’s tossing and turning didn’t disturb my sleep.
Size Options and Pricing
The mattress comes in a variety of sizes, from Twin to California King, which made it easy for me to pick one that fits my bedroom perfectly. Pricing was competitive for a mattress with these features, and I found some good deals during sales.
What to Consider Before Buying
- Firmness Preference: I recommend testing the medium firmness in-store if possible to ensure it suits your comfort needs.
- Sleep Position: This mattress works well for side and back sleepers, but stomach sleepers might want to check if the medium firmness provides enough support.
- Allergies: Copper’s antimicrobial qualities may benefit those sensitive to allergens.
- Trial Period & Warranty: Check the trial period and warranty offered by the seller to feel secure in your purchase.
Final Thoughts
Overall, my experience with the Sealy Cool 12 Medium Memory Foam Mattress with Copperchill Technology has been positive. The combination of cooling features, balanced comfort, and solid support made it a great choice for my needs. If you’re looking for a mattress that keeps you cool without sacrificing comfort, I’d suggest giving this one a serious look.
Author Profile
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Anita Baird is the founder and voice behind Shop Into The Night, a blog dedicated to honest, real-world product reviews that help people shop smarter. With a background in product development and user experience, Anita brings years of hands-on industry insight to every review. Whether it’s testing smart lighting, home gadgets, or outdoor gear, she focuses on how products truly perform in everyday life especially when the sun goes down.
Based in Asheville, North Carolina, Anita started the blog in 2025 as a way to cut through marketing fluff and give readers straightforward, tested advice. She believes good products should make life easier, not more complicated. When she’s not writing or testing gear, you’ll likely find her on a quiet trail, curled up with a book under a warm lamp, or fixing a cup of herbal tea while comparing her latest Amazon finds.
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