I did research before my purchase and read that the Casper mattress was good for side sleepers and so far, my hips really appreciate this mattress, no more soreness in the morning. I also read that the foam mattress was not the same as other mattresses and that there could be a sense of not feeling secure on the edge of the bed; I was a little concerned about this but happily I have had no issues. All good, it was easy to put together, I will say you do need a hammer or mallet to help put together the frame, but it was a fairly easy task and can be done by one person seamlessly.
My bff has has a Casper for years now and every time I've slept in it, I wanted one. I finally got one and it's amazing. The first time I laid down I went "oh my god" because it's that good. It's firm but also feels like memory foam, it's kind of like a hybrid between a regular bed and a memory foam bed. It's amazing. My husband and I have the queen sized and I can't feel him rolling around. I love it. Wish I bought one years ago because I can actually get out of he in the morning without pain. I have scoliosis and I've a temperpedic bed and various other memory foam options but they don't offer the support I need. This one is perfect.