1. Material: PU leather 2. High peeling PU leather, the surface is tough and not easy to tear 3. The inner tank is strong and resistant 4. Double heads: configure one rubber band on top and bottom, find a place to fix it and you can exercise; 5. Single-headed: You need to prepare a wooden board yourself, hang it below or close to the wall, and use the wall to bounce 6. Weight: about 280 grams 7. Size: 29x20 cm (height x diameter)
