Halcyon Integrated ACB Pockets (Pair)INTEGRATED ACB POCKETS (PAIR) Halcyons patented Active Control Ballast (ACB) system securely holds up to 5 lbs of weight per weight pocket while still allowing quick release when needed. Weights are placed in an interior pouch with a handy carry handle and velcro flap, then the entire pouch is slid inside the rugged cordura outer pouch that is held shut with a fastex buckle. The entire pocket can be easily slid onto an existing weight pouch and