I was looking for a sustainable mattress with no fiberglass for adult time and guests. This one was well packaged and arrived early. I loved the included cutting tool, which I've since used to open another mattress. Description said there's no fiberglass, and unlike some other mattresses that got caught from the manufacturing tag, the tag for this mattress indicates no fiberglass. I also did a deep dive into the company and believe they are doing their best from a sustainability perspective. This mattress was made in Thailand. I have had two guests who say they love sleeping on the mattress with one around 160lbs and another well over 250lbs. However, when moving around during adult time, you slide all over the place. I ended up getting a 100% foam mattress for adult time and am using this one for guests. I recommend this mattress for sleep, but not adult time.