Anchor your training bag in minutes. The Hayabusa Double End Heavy Bag Anchor fastens to any punching bag to provide maximum stabilization; you only need water or sand. Its large bladder holds up to 900 oz or ~55 lbs of water, the perfect weight to anchor a double end bag or prevent your heavy bag from swaying. Constructed from heavy-duty canvas fabric, with reinforced nylon webbing and a sturdy triangular D-ring on top to distribute tension effectively. Pairs best with Hayabusa Double End Bags and Hayabusa Heavy Bags. - Provides an anchored base for all training bags to maximize stabilization - Perfect for double end bags and heavy punching bags - Heavy-duty canvas exterior is constructed to resist wear and tear - Thick bladder with twist cap holds up to 55 lbs of water (ships unfilled) - Reinforced nylon webbing secures steel triangular D-ring in place - Can be filled with sand instead to increase weight