Nagatomo Method TY-100 Core Yoga Ball. Brand: Tokyu Sports Oasis Material: Polyvinyl chloride (PVC) Color: White Weight: 1.5 kilograms 【Size】Maximum diameter: Approximately 30cm 【Weight Capacity】Up to 400kg Co-developed with soccer player Yuto Nagatomo! NAGATOMO Method Core Yoga Ball Yuto Nagatomo, who continues to shine on the world stage, emphasizes "core strength," "yoga," and "relaxation" in his daily exercise routine. Core training links the deep muscles of the body, the inner muscles, with the superficial muscles, the outer muscles, to comprehensively and efficiently strengthen the core muscles. By doing so, you can aim for well-balanced, high-quality muscles in your core. Yoga training expands the range of motion of each joint, allowing you to move areas that were previously difficult to move, making core training easier. Combining these two types of training creates a significant synergistic effect. Furthermore, the training is finished with relaxation training. The important thing is, in addition to "strengthening and training," to expand the range of motion of the joints with the "yoga" element, and to consciously "relax" and loosen both the body and mind. This effect not only helps to build a body that doesn't get injured but also contributes to improved metabolism, and you can expect a high body-making effect. It contains approximately 1kg of weight (sand) to allow for abdominal exercises with added resistance. Everything in the images is included. There is no box. It has been kept at home without being used much. Please understand that this is a home-stored item. Please note that the air will be deflated for shipping. Thank you for viewing.