V770FS 4 pc. Replacement Foam SetIncludes: (1) 1. 50'' (3. 8 cm) Polyurethane Solid lid foam (2) 1. 89'' (4. 8 cm) Polyurethane Solid base foam (1) 0. 63'' (1. 6 cm) Polyurethane Solid base foam The foam set is an easy do it yourself system for customizing the interior of your case. Simply lay your equipment on the foam, tape or chalk to mark the foam, and cut. Always allow at least one inch of foam between your equipment and the wall of the case.