Our Foam Bricks -21 are a safe alternative to dry ice. When using the Foam Brick -21 for frozen transport, no dangerous goods regulations apply. This frozen element is non-toxic and also approved for food transport. Unlike dry ice, the Foam Brick -21 can be stored in freezers at -30°C and can be reused at will. Due to the foam core it is dimensionally stable in frozen and unfrozen state.