12"Cooling Copper Gel Mattress - Fiberglass-Free - King

We needed a King mattress for our guest room and didn't want to spend a fortune. This 12-inch copper gel mattress was the perfect solution. The bed-in-a-box format made it incredibly easy to get upstairs and set up — my wife and I had it unboxed and expanding within 20 minutes. We waited about 60 hours and it was fully expanded. Every guest who has slept on it has commented on how comfortable it is. My parents stayed for a week and my dad (who has a bad back) said it was the best sleep he'd had in months. The cooling feature is a nice bonus — our guest room gets afternoon sun and can get warm. The motion isolation is good enough that our guests haven't complained about partner disturbance. The CertiPUR-US certification gives me confidence about the materials. For a guest room mattress at this price point, it's outstanding value. Would definitely buy again.

I spent weeks going back and forth between the 12-inch and 14-inch versions. I went with the 12-inch King and I'm confident I made the right choice. It's substantial enough to feel premium but not so thick that changing sheets becomes a workout. The 4-layer progressive support system is excellent — there's a clear difference in how it supports my lower back versus how it cushions my shoulders. I've had chronic lower back pain for years and this mattress has reduced it significantly. The copper gel foam has a great balance of contouring and support. The ice silk cover is really nice — smooth, cool, and high-quality feeling. Cooling performance is solid; I wouldn't call it ice-cold all night, but it definitely stays cooler than any standard memory foam I've tried. No fiberglass, certified safe materials. Very happy with this purchase — it's a well-built mattress at a fair price.

I'm a naturally hot sleeper and my wife is always cold, so finding a mattress that works for both of us seemed impossible. The cooling technology on this King mattress is no joke — the ice silk cover has an immediate chilling effect when you lie down, and the airflow system keeps the temperature regulated all night. I stay cool and my wife says she's comfortable too, so it works for both ends of the spectrum. The 12-inch profile is a good middle ground — not too thick, not too thin. The 4-layer system provides excellent support; I've had lower back issues and this mattress has made a noticeable difference. We've had it about seven weeks and no sagging or body impressions. The King size gives us plenty of room. Shipping was fast and the bed-in-a-box expanded fully within 48 hours. Very satisfied.

As a new parent, I became obsessive about household materials and safety. I spent hours researching mattress certifications and this was one of the few affordable options with both CertiPUR-US and OEKO-TEX certifications. The fiberglass-free construction was verified — no glass particles, no chemical flame retardants, no heavy metals. The mattress had almost no smell when unboxed, which was a relief. We got the 12-inch King for our master bedroom and it's been fantastic. The copper gel foam is comfortable and supportive — my husband's snoring has even reduced since the mattress supports his spine better. The cooling ice silk cover is a nice touch. Our toddler sometimes naps on it with us and I feel completely safe with the materials. The 4-layer system provides great support for both of us. Excellent mattress for health-conscious families.

My husband is a restless sleeper — he tosses, turns, and gets up multiple times a night to use the bathroom. On our old pillow-top mattress, every movement felt like an earthquake. This 12-inch King has been incredible for motion isolation. The copper gel memory foam absorbs movement so well that I can sleep right through his midnight wanderings. We've been sleeping on it for about two months and the difference in my sleep quality is dramatic. I used to wake up 4-5 times a night; now I sleep straight through. The cooling effect is a nice bonus — neither of us runs particularly hot, but the mattress stays comfortable and doesn't trap heat like our old one did. The 4-layer support feels great for both of us. I'm a back sleeper, he's a side sleeper, and it works for both positions. The CertiPUR-US certification was important to us. Great mattress for couples.

I was specifically looking for a King-size cooling mattress under $600 and this was one of the few options that checked all the boxes. The cooling performance is good — the ice silk cover provides a nice initial chill and the mattress doesn't trap heat the way my old foam mattress did. I'd say it sleeps about 60-70% cooler than my previous one. Is it as cold as a dedicated phase-change cooling mattress? No, but those cost $1,500+. For the price, the cooling is impressive. The 12-inch thickness is comfortable and the 4-layer support system works well for my back. Motion isolation is decent — my partner moves around and I feel it slightly but it's not disruptive. It was firmer than expected for the first week but softened up nicely. The CertiPUR-US and fiberglass-free certifications were important to me. Overall, a very solid value for a King-size cooling mattress.