Watertight high impact military grade polypropelyne case with a custom foam insert designed to hold and protect your most valuable coin slab collection. This box comes with a rubber molded handle and a high impact shell that features 0-ring seals and automatic pressue equalization valve to maintain interior pressure, while keeping water out. The foam core insert is custom cut to perfectly hold PCGS slabs. For the high end collector, there is no better way to store or transport your collection. Holds 36 coin slabs. Made in the USA.