PiggyBack Pack – 12L/15L Modular Hydration & Sustainment Pack

The PiggyBack Pack is a modular hydration and sustainment pack offered in two sizes: 12 liters (750 cu. in.) with a half clamshell opening, or 15 liters (900 cu. in.) with a full clamshell opening. Both measure 15" × 10" and lay 5 to 6 inches deep, and an interior divider sleeve holds a 3L (100 oz.) bladder up to 15" tall and 10" wide, or a radio. It mounts to a FullTang chest rig shoulder harness through the patent-pending Universal H-Harness Receiving Sleeve to run as a standalone day pack, or attaches to larger packs and plate carriers by MOLLE or straps. A full-length zippered admin pocket with a laser-cut MOLLE grid covers the front, and a removable 1/4" foam insert adds structure. Built from DWR/TPU-coated 500D nylon and 1500D laminate, 14 to 16 oz, with a choice of water-repellent YKK® AquaGuard® or standard reverse coil zippers. Sold in base configuration: shoulder harness, pads, straps, and pouches are sold separately. Hand-made in Tennessee by FullTang Tactical.