Sound impossible that foam-based armor could stop armor piercing rounds? Testing has proved it is indeed possible.They actually made a shield out of the foam to shoot at.
In tests conducted by the development team, the foam body armor was able to defeat an armor-piercing bullet. And on impact, their foam smashed the bullet into powder.
To challenge the foam material with bullets, the team built a shield. The strike face - the side facing the weapon - was made with the new composite metal foam together with boron carbide ceramics. The backplates – the side that would face the user - were made of Kevlar.I wonder how much this shield weighs? Also it would be interesting to see if you can make clothes out of this foam Kevlar mixed.