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We have received advice from the gym, the pathway, and professional martial artists, and we have successfully developed a low and durable sandbag (sandbag). Our sandbags are made of canvas, and the bottom part uses reinforced material to withstand heavy weights, and the chain attachment points where impact is most applied, with lining or rivets, and the stitching is made with enough consideration for strength. Regardless of the martial arts genre, it is also popular among amateur training and professionals.