This versatile tool comes with two Micro leather-encased foam balls (70mm diameter) for twice the action, requiring no inflation or bladder. It's instantly adjustable to accommodate both kids and adults, with customizable tension for varying speeds. Additionally, it operates almost silently, making it ideal for home or apartment use on door jams. Engineered for power punching and precision in combinations, it features a 2.7-meter heavy-duty stretch elastic cord suitable for various ceiling heights. The package includes three adjustable squeeze tabs for achieving optimal bag tension and is bundled with a mini floor anchor, eliminating the need for strenuous floor installation (filling not included).