The product arrived on time and is as described. Its 4 " thick and is made of single piece of foam. After I let it expand and remove odors, I had to hold it along the edges and move it to my bedroom. ( I did not order the mattress protector which is an accessory). Small chunks of the mattress came off the edges where I had to hold to carry it into the room. They are very tiny pieces about 2 mm wide, so no real concern, but there were about 10 such pieces that came off, so it should not be carried around too often. It provides a good comfortable nights sleep, but if you are looking for a slightly firm mattress topper, this may not suit you right. It sinks almost all the way in, but not to the extent of being uncomfortable. Pretty good buy. Used it for a couple of months now. Its good.