InofiaKing Mattress 12 inch Hybrid King Size Mattresses Cool Bed with Waterproof Rayon Mattress Protector Included, Medium Firm Feel, Motion Isolation, 101 Nights Trial

This mattress is very comfortable. I bought it for my summer home. I opened it up and let it sit awhile before sleeping on it. Since it was my summer home, I was gone for about a week. That gave the mattress plenty of time to rise. It is a full 12 inches high. The sides are very sturdy when you sit on them. Not squishy at all. Very good value. I have only used it a few nights but good so far. I will update if needed.

We purchased this mattress for our 23 year old autistic son recently, as his old, chap mattress had become tired and worn out. His bedroom is quite small and so the Twin was our only option, though we did buy the Twin as the XL version so that he has a bit more length. He's just under 6 feet tall so the extra length suits him well, and since he tends to sleep mostly on his side the Twin does work fine.So we tore open the box and carefully opened the plastic using the included cutting tool, no problem there. We placed the mattress atop the bed frame which is a raised 14 inch platform which requires no box spring and then we allowed the new mattress to expand for about 8 hours before we went to sleep. Being that our boy is a night owl he probably didn't climb into his newly se-up bed for another 4 or 5 hours. When he woke up I asked him how he slept and he exclaimed "I slept GREAT!" so I knew that he loved it. The mattress then got the rest of the day to continue to expand.I have to admit to being a little freaked out at first. After getting the rolled up mattress out of the box we laid upon his bed frame while still in the plastic and it looked quite a bit wider than the bedframe. Don't let that panic you like it did us. As soon as it's out of the plastic and is expanding that extra width disappears and the end result is a fully corrected size mattress. We did not notice any sort of aroma emanating from the mattress short of BRAND NEW fragrance. It was just fine. There are NO handles on the sides for carrying but the mattress can be easily set on it's side and manipulated, especially easy if you have a helper.In a nutshell, it appears that this is a really nice hybrid mattress at a great price. It seem firm enough to offer support even for a "Husky" person yet it offers an excellent, very soft, comfortable top, almost like a pillow top, and the mattress seems to keep him cool while he's sleeping. We are very pleased with this purchase at this early stage and will add to this review as/if necessary.

I only sleep on half of the bed and after several months of using this, it shows. I need to turn it and sleep on the other side for awhile. That being said, it is comfortable. Not the softest in the world but I didn't want that. For the price, it is good quality and I think will last for a few years.

This bed is so comfy with a little firmness. I’ve bought 3 of these mattresses. We just bought a twin size for my son’s nursery when the grandmas stay over and they both love it! Easy to open. I’m plus size and we’re had our king bed going on 2 1/2 years, no sinking in. It’s quite thick so the sheets fit perfect. When you first open there may be a little smell but you’re suppose to let it lay open to “fully form back” and it goes away fast. I use to judge a bed in a box concept, that it can’t be firm. I was wrong and it’s functional for shipping and getting to the bedroom.

Very comfortable and so far is holding up wellWorking great on my adjustable bed, no issues at all

Bought the XL twin. Followed reviews that advised to let it air out a day or two. This ensures that is is firm to sleep on. My son really likes it and finds it very comfortable.

Easy set up, comfort, excellent price, comfort that is affordable

The four corners are sunken, the material is soft, medium to hard. It's a good mattress, and it's in line with the price.