Product descriptionMaterial: polyvinyl chlorideSize: 53 * 145 cm, 63 * 155 cm when inflatedColour: BlackQuantity: 1 piecePackage content: 1*inflatable box post, 1*inflatable pump1. Sturdy and durable: the independent punching post and base are stable and can withstand heavy punches and kicks without falling over. The multi-layer PVC material is durable but soft enough not to damage the punch.2. Special design: This inflatable boxing post is designed with a special air and water bottle stopper. The air bottle stopper has a double lock to prevent air leakage and the water bottle stopper is sealed shut to avoid leaks.3. Stress relief: This sandbag is perfect for home exercise or to relieve stress when sitting all day for stimulation. You get good exercise to prevent bored sibling outbursts, which is a great way to relieve stress in children and adults. You can also train your child's coordination and flexibility.4. Lightweight and easy to use: simply add water or sand to the base and use the bike pump to fill it with air at the top and middle. When not in use, it can be empty, folded and ready for the next time you play, travel or wherever you can take it with you.5. Ideal gift: This inflatable boxing post is the ideal gift for children, allowing you to spend quality time with them and encouraging them to play independently.