Inflatable Punch Bagboxing bag Description: High quality polyvinyl chloride Good stability, thick bottom, foldable, easy to move Made of high quality PVC material, thickened design, portable and durable, more wear resistant, suitable for indoor and outdoor use. Easy to inflate and deflate, foldable storage. Boxing sandbags use the principle of the tumbler. Because of its soft function, it can absorb vibration and protect you from accidental injury. And its stable