Ideal for Fitness: Inflatable sandbags are ideal for fitness and stress. Improve coordination and flexibility, burn calories and reduce stress while increasing flexibility and hand-eye coordination. Each time you hit the ball, it is also an ideal choice for Taekwondo training. Can be used for adults and children. High-quality PVC: The inflatable boxing column is made of high-quality PVC material. It measures about 63inches / 160cm in height and it rebounds quickly and softly. Great for everyone to exercise and play. Safety and Durability: Robust PVC material ensures safety and durability. In addition, soft rubber is stuffed into the boxing ring and is sealed. Practical and Safe: The training column can be folded and stored. It is practical, safe, and ideal for children's boxing instructors because there is no risk of injury, allowing you to burn calories and release stress. It is definitely the perfect gift. Use Method: Open the bottom and fill it with water or sand to add weight and make it stand steadily on the ground. Boxing Punching Bag,Punch Bag for Boxing Training,Freestanding Boxing Punching Bag Fitness Exercise Pressure Reducing Heavy Bag for Adults Childre,Heavy Duty Punching Bag