Olee Sleep 10 Inch King Size Gel Memory Foam Mattress - Medium Firm, CertiPUR-US Certified for Pressure Relief & Comfort | Cooling Gel Infused, Bed-in-a-Box Design | Perfect for Master Bedrooms, Guest Rooms & Apartment Living (Grey)

EDIT: 20 month post purchase update (original review below)-So far so good. I felt like this mattress has a little more “give” where I sleep. I’m not the kind of person who sleeps all over the bed. I sleep in one spot. So, when I moved to my new home, I turned it around and it has solved the problem. The area where I slept before shows no signs of the “give.” I sleep alone, so I don’t know how it affects couples. I’m 5’3”, 165lbs (160cm, 75Kg).I do recommend a mattress protector only because of the porous fabric. I learned this on the night of the pukies from my three-year-old daughter.In other news, I recommended this mattress to a friend and she bought it. She sleeps more soundly than she did on her innerspring mattress. I have added the photos from when we unzipped and let the mattress decompress. SHE LOVES IT. She says she read the conflicting reviews, but decided it was worth it because I wouldn’t shut up about it. If she only gets a few years out of it, she still thinks it’s a worthwhile investment because her sleep is so much better and her aches and pains are about gone. Her FitBit has shown a much better sleep pattern.Almost two years later and I’m still in love with this mattress and the frame I bought to go with it.I waited to write this review after having this mattress for about six months. I like to have a product a while before writing a review. When this bed arrives, it comes in a box that is about 18"x 18"x 48". That's an estimated size by memory. You pull the bed out and lay it out. It comes compressed and folded in half. Then, check for the zipper on the bed. Make sure that is on the bottom and open the plastic. The bed begins to decompress. Let it decompress for 24-48 hours. I let it decompress for 48 hours because I was moving into a new apartment and I had the time to do it. I put it on theHome Life Cloth Light Beige Cream Linen 51" Tall Headboard Platform Bed with Slats Queen - Complete Bed 5 Year Warranty Included 008 Home Life Cloth Light Beige Cream Linen 51" Tall Headboard Platform Bed with Slats Queen Bed and it looks amazing.Pros: Comfort! It does NOT sleep hot. I don't feel myself tossing and turning at night. I lay there, and I sink in, but not too much. It doesn't take too much effort to move like some lower density mattresses. Sheets do not slip off and they hold really well, so that's a big plus. The soft fabric covering the mattress holds sheets well and the stitched in pattern does not bleed through on white sheets. When I sit on the edge to play my guitar, it's the perfect height and my back feels great- better than any chair.Cons: I see a lot of reviews about the smell. I have a hyper sense of smell. The chemical smell dissipated in a few hours. I did not detect it at all after about six hours. Get the plastic the mattress came in out of your house if you don't want the smell lingering. The mattress is heavy, but that just indicates the quality of the product. Besides, all mattresses are heavy unless they are full of air. When it's cold, the bed becomes harder. When its hot, the bed is softer. Keep that in mind when adjusting the temp of the room. And when I say cold, I'm talking 35 degrees F. I left the heat off when I went out of town and the bed was denser than usual when I got back. I warmed up the room and it went quickly back to normal. On hot nights it is softer. I doubt you're sleeping in freezing temps, so this isn't a big deal.All in all, this thing is a great buy. I'm glad that Amazon has made it as a recommended product. It's comfortable and priced well. The queen sized one works well with a slat bed and after six months has continued to provide a restful night sleep. I'll try to remember to give it another review at the one year mark.