My MIL had a Diamond mattress that she purchased over 5 years ago, and it was the most comfortable mattress my husband and I had ever slept on. Fast forward 5 years later and it was time for us to buy a new mattress, and so we went with the Diamond brand and selected the Alpine Breeze in medium. It is perfect! The mattress arrived in a box and we unpacked it and waited 24 hours before using it. It reached 14.5 inches in height and is of great quality. From day 1 this mattress has exceeded our expectations. It is cozy, comfortable and provides the best back support. If my husband moves or gets out of bed, I do not feel a thing. I highly recommend this mattress, you won't be disappointed.This mattress went above and beyond our expectations!!! We have never slept better!! So comfortable and when we move we do not disturb each other’s sleep. Highly recommended!!!This is one of the softest beds I’ve been. If you are looking for firm this is not your bed.Quality is good but not firm. Had to use bed board and flat pillow under the bed to make it a little firmer.