Extra firm is correct and that is what we wanted after a firm mattress not providing good support after a couple years. Of course, we will have to wait and see how it holds up. The construction says more support in the middle and that is what I need. For comfort we have a basic bed topper and heavy matters cover with some softness. That has worked well for both a heavier and lighter weight person. Great side support and solid construction.

This mattress is so incredibly comfortable. I have back issues and I have Ben resting so much better,sleeping soundly and not nearly as warm as our other mattress. This is definitely a great value!

I bought this after trying another mattress which said firm but was not firm. Me and my wife are extremely happy with this mattress. It provides great support, does not sink in and is firm. It also has small cushioning kind of top which does not make it feel like a rock. Definitely recommend this to anyone looking for a good FIRM mattress.

Still trying to get used to this extra firm mattress. My husband is happy with this purchase, however, I am the one with more back and neck issues and wanted to get rid of our other mattress, that was just over 3 years old. It was one of the memory foam kind, and was great for about 6 months, but then my back issues got way worse than they ever had. The mattress at that point wasn't supportive enough. Anyway, we didn't go anywhere to test the Beautyrest Silver Charcoal Coast Extra Firm King Mattress...I just placed the order, because I knew I needed the support...but now it's almost too hard. My mistake in not trying to locate one and try it out first, and now we are stuck with it. Like I said, my husband is happy with it, even though he said he still gets hot at night, but not like with the other mattress. We may eventually get a memory foam topper for this bed for my benefit. I hope that it holds up longer than the last one did of only 6 months before we were ready to throw it out.

Comfortable mattress, good value. Have in our guest bedroom Would have given it 5 stars but about a week after it was delivered when we went to make the bed, we noticed there is a 4” portion where it missed being sewn together on the underside of the mattress at the seam. Quality control should have caught that.

This mattress was great—until it wasn’t. About 3 years in, it started to noticeably have sagging on both sides. By year 4, it was completely done. The back pain is excruciating. Disappointing for a mattress that was sold as lasting 10 years.

Purchased this mattress that was delivered 11/21, and I am not pleased with the firmness. Owned a tempurpedic since 08 and it had gotten too soft. Used plexiglass/lexan to help ease my back pain for several years, and looks like I need to add it to this one also. My back has ached since purchase of this "not so extra firm" mattress. Also the delivery date was NOT what was advertised "before" purchase

Looks good and comfortable but after 6 months, we began to feel a depression in the mattress where we each slept. After 9 months a depression where we slept was noticeable and we could feel a ridge in the middle of the mattress that is now even more pronounced after 1 year. It was comfortable the first 6 months, but after the depressions were we slept and the ridge formed, it became less comfortable. The ridge in the middle makes it difficult to sleep near the center of the bed. We are not heavy in weight, or overweight, and that makes us wonder if the material used in the mattress is very good material. We would not purchase again nor can we recommend this mattress or the material used to make it. The original coil mattress we had originally lasted over 30 years and was very comfortable until a spring broke. This mattress did not last one year.

Mattress is as hard as a rock. Trying to get a hold of someone to return it has been an absolute nightmare. Sam's customer service is awful. Serta's customer service is worse. Call and get a message that they are in a team meeting and then call disconnects. Absolutely horrible. I don't think I will continue my Sam's membership after this terrible experience.

This mattress is NOT ultra firm. Yes, they've branded it as ultra firm but there's a layer of "plush" soft material on top of the firm part. The problem is, this top layer is super low quality. I'm a 220 pound guy which isn't overly heavy and Im literally sinking 6 inches into the mattress a week after purchase. There's a valley where I sleep already! So if you need a firm mattress that you actually sleep on top of, and not sink into, look elsewhere. I'm surprised how low quality this mattress is. Ignore the reviews saying how great this thing is... It's not!