The 3D open-cell structure of the foam works as a built-in baffle, reducing fuel slosh. As fuel moves through the foam, abrupt, violent changes in direction give way to a slower, more controlled flow. That stabilizes the side loads of the fuel inside the tank and improves vehicle handling. Depending on the tank’s shape and design, the amount of foam used, and how closely it conforms to the tank, structural baffles may no longer be needed.