Note: This sandbag is hollow and requires self-filling. It is recommended to fill it appropriately; do not overfill with sand or other heavy materials to avoid affecting performance. Wall-mounted sandbags are easier to carry than traditional hanging sandbags and can be mounted on a wall or placed on a stool. The wall target receives reaction force from the entire wall structure, allowing for more effective penetration training compared to standard sandbags, as the wall does not move like a hanging bag, significantly improving stability. Wing Chun and Jeet Kune Do include extensive wall target training, and Bruce Lee used the wall target as a primary training tool during his lifetime. Bruce Lee often used 2-3 sandbags upright (known as two-cut, three-cut) or hung multiple sandbags on a wall, filling them with sand, gravel, beans, steel scrap, or iron sand to experience the sensation of striking different materials and to train body mechanics at various striking positions. This sandbag is designed for fist conditioning. Using wall-mounted targets allows training for various boxing techniques, including Wing Chun fist exercises. When practicing, position yourself approximately 17 inches (45 cm) from the sandbag and use elbow force to deliver punches, keeping the arm muscles relaxed and not tense. Perform up to fifty punches as part of training. If pain occurs, stop immediately. Kicking sandbags is an advanced skill that helps develop footwork, especially for techniques like Wing Chun's three kicks, requiring coordination of breath and movement while maintaining body balance and avoiding imbalance upon foot landing. Color: Creamy white. Material: Canvas. Size: 40 x 40 cm. Weight: 160 g. Package Contents: 1 x Empty Sandbag. Only the above package content is included; other items are not. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.