4 lb. memory foam offers a good density compromise. It is denser than 3 lb. memory foam, making it firmer and more supportive. However, it isn't as dense as 5 lb. memory foam, which means it will have a nicer initial feel, be just a little more yielding, and will cost less.
2" memory foam is the thinnest memory foam we offer. Because it is thinner, you will not sink in as much. This makes it ideal for people who sleep on their stomachs.
