Features High-quality materials: light but strong. It is easy to fold and can be placed in the included suitcase. Depending on the speed, it can resist 5-15 kg. Strength training to increase explosive power, speed and core strength. Lightweight umbrella body, easy to carry. Always focus on high-quality products, customer satisfaction is always our goal. how to use Please tie the belt around your waist and run as fast as possible. The faster you run, the greater the resistance. If you have any questions, please feel free to contact us, we will reply to you within 24 hours
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