Have ordered due to the positive reviews on Amazon this mattress (was also the first time that I have ordered such a large item with delivery by forwarding at Amazon ... high praise, you can go to the ordering process itself determine the date of delivery, the forwarding logs then a few days in advance because of the approximate time and again about half an hour before delivery!), since up to 80 kg of hardness grade 2 (moderate) is recommended and I weigh 70 kg I was actually believed to have made the right decision , My husband ordered the same in hardness 3 (it weighs well over 80 kg). So I had the direct comparison - you really notice a distinct difference, H2 is much softer, I was immediately skeptical ... while my husband was thrilled after the first night of his mattress, I noticed after several nights significant pain lower back ... I had also clearly feel my butt or hips decreases simply too deep ('m side sleeper) ... so I tried just look at the mattress of my husband ... and lo and behold, no back pain, a better feeling "well supported" to sleep. Mattress ordered - So have my mattress returned (once again kudos to Amazon, was just as problematic as the actual delivery !!!) and also the H3! Now I'm happy to be the mattress is really good (therefore still 4 stars ... who is like very soft or significantly less than 80 kg is will surely be thrilled !!), only the hardness should be corrected: H2 corresponds here rather soft, H3 rather AGENTS !!