I think you know the ones I mean, like Leesa, Casper, Tuft & Needle, Helix, Sapira and so on. You may see them advertised on TV or on Facebook. They are mostly layers of different kind of foam, including memory foam and varieties of latex, in different configurations. Then there’s Purple, which is kind of its own thing, and Saatva, which has springs as well as foam. They generally come shipped to you rolled up in a box and when you set them free they expand and look more like what you’d expect a mattress to look like. Typically they also have a 100-night no-risk warranty (they will pick up the mattress and refund all your money including shipping, although this varies). They are also typically less expensive than mattresses you would buy in a department store or a mattress store, based on the idea that we are saving by them having lower overhead (i.e. no stores).
There are some potential issues, such as out-gassing from the foam, and durability (all of the companies are so new, none of their products are anywhere near old enough to have tested their warranties yet).
So has anyone tried one or more of these, and what was the result? I’m seriously thinking about one or two of them. I like the idea of less motion transfer, and cooler sleeping than memory foam (at least as claimed). There are a couple of decent review sites online (Sleepopolis and Good Housekeeping) but I’m interested in your first-hand experience.