I haven't had this mattress topper too long, but but from the short time I've had the pleasure, about 2 weeks, it's plush, soft and comfortable. I didn't have to let it expand, it didn't have any odor, just put it on the bed and go to sleep. I was hoping it would stop the night sweats, but this hasn't been the case yet. The main reason for the purchase was to relieve low and mid back pain from a too firm gel foam mattress that I thought was causing my discomfort. It has relieved most of the pain, but some remains from other physical ailments. I'm happy with the topper. I wish it was more plush, maybe it could be a 5 star with a little extra fluff, but it serves its purpose of being a soft, comfortable accessory to get a good night's sleep. The elastic goes all the way around and does a good job of hanging on around the corners and stays fast to its position and doesn't slide around. I'm very happy with my purchase.