The surface is made of load-bearing PVC fabric and a number of solid handles. The interior is covered sand and wrapped in pearl cotton. It is sewn with PU material. It is very durable and strong, so you don't have to worry about sand leaking or grinding. This is the ideal choice for beginners. These lightweight bags are lighter than full-weight bags, but they are also sturdy and durable! There are multiple handles on the logs, and children can easily learn the basics of sandbag training. The correct form. Allow students to adapt to lightweight sports, boxing training, and physical fitness. It is also a teaching aid for training children's strength and teamwork ability. Children communicate and collaborate to lift or move this heavy object to the designated target place.