Vertx SOCP, Tactical Fanny Pack, 5000 Cordura Nylon Construction, Black F1 VTX5228 IBK NA NA Meet the SOCP Sling's big brother" the SOCP Tactical Fanny Pack. This tactical Fanny Pack is large enough to conceal your everyday carry while still maintaining its low-profile functionality. Whether you're on duty or off" this pack is ready for whatever you have in store.