Key Features Sturdy and Durable: Made of premium foam, polyethylene, iron, rubber and plastic with integrated molding and electroplating processes, the product is impact-resistant and wear-resistant with high durability. Training Aid: The thickened spring allows it to swing the bag 90° flexibly and bounce back after each strike, helping you to throw punches effectively at high speeds in simulated real fights, exercising arm muscles and hand-eye coordination. Adjustable Height: You can adjust the height of the support stand from 49.21 to 61.81 inches with the rotary knob to meet the needs of different training programs and meet the usage habits of users with different heights. High Stability: 6 rubber suction cups on the base provide a stronger grip while reducing noise. In addition, its base can be filled with 62.83 pounds of water(not included) to provide greater stability. Application It is suitable for professional boxers, fitness enthusiasts, office workers who lack exercise, bodybuilding enthusiasts, and growing teenagers. It is suitable for home gyms, fitness studios, boxing training centers, personal training rooms, etc. How to Install 1.Open the lid on the base, pour water or sand into the base, and then tighten the lid. 2.Remove the plastic cover and put it on the threaded tube. Tighten the threaded tube, and then place the plastic cover on top of the spring. Align the four holes of the spring with the four holes of the base, and then tighten the screws. 3.Move the foam to the top of the inner adjustable rod. Then insert the inner adjustable rod into the lower pipe, and use the control handle to adjust it to the appropriate position. 4.Fix the bag on the top of the adjustable rod with a screw, and tighten it with a nut. Then adjust the foam cover to cover the screw for protection. Specification Material: Foam, Polyethylene, Iron, Rubber, Plastic Process: Integrated Molding, Electroplating Style: Modern Color: Red+Black Mount Type: Floorstanding Assembly Required: Yes Rebound Angle: 90° Water-holding Capacity: 28.5kg/62.83lbs Number of Suction Cups: 6 Suction Cup Diameter: 8cm/3.15in Adjustable Height: 125-157cm/49.21-61.81in Level Spacing: 6cm/2.36in Base Size(D*H): 48*22cm/18.9*8.66in Ball Size(D*H): 18*25cm/7.09*9.84in Package Size: 51*47*25cm/20.08*18.5*9.84in Gross Weight: 5.4kg/11.9lbs Net Weight: 5.13kg/11.31lbs Package Included 1* Punching Bag with Stand 1 Pair* Gloves Other Accessories for Assembly