Punching Bag Made of high-elasticity polyurethane speed bag, reinforced thickened springs, and stainless steel seamless tube support, the base is equipped with 32 strong suction cups, providing strong suction power, enough to secure it firmly without the need for additional water or sand for stabilization. Features a quick-lock dual-tightening design, with an adjustable height of 138cm-160cm, suitable for both adults and children. Also offers considerate after-sales service; if you encounter any problems, please contact us on Amazon, and we will be eager to solve them for you.White Floor Sticker Help the Speed Bag Adhere More Securely