The TZ 4000 with a series of expanding pockets and compartments arranged in a compact vertical design, youâ??ll never miss an opportunity to take down a shooter. The TZ 4000 can be configured into three primary sizes to handle whatever your hunt requires. Packed-in, it provides a generous 2,500 cubic inches of storage space. Open the expanding side compartments for an additional 300 cubic inches. When youâ??re hauling out that monster buck, open the central meat compartment for another whopping 1,400 cubic inches.