The Foam Density is the strength of the foam. The denser the foam, the stronger and more durable it is. Denser foam should be selected if you want a more rigid and longer lasting cover. It is especially important in areas that have snow (2 lb density is recommended). The stronger the density, the less likely it is to prematurely bend, break or bow. A higher density is also recommended if you have children, pets or errant adults. A denser foam will also be less likely to get water absorption and will also provide better heat retention.
