- Versatile Water Dumbbells: Adjust the capacity from 2500ml/5lbs to 500ml/1lb, allowing you to customize your resistance training and hydration during pool workouts for optimal performance. - Durable and Safe Design: Constructed from PETG and PP materials, these dumbbells feature a slip-resistant handle for secure grip. The leak-proof design includes 9cm wide openings for quick refills and 50% improved sealing performance. - Stylish Color Options: Choose from five vibrant colors to match your active lifestyle, while ensuring the dumbbells maintain their structural integrity in temperatures ranging from 0-40°C. - Ideal for Various Activities: Perfect for poolside workouts, rehabilitation exercises, or outdoor group training sessions. Enjoy the benefits of water resistance while having immediate access to hydration. - Enhanced Performance: The adjustable weight feature allows for progressive training, making it suitable for users of all fitness levels. Whether you're a beginner or a seasoned athlete, these dumbbells provide an effective way to strengthen muscles while enjoying the water. - Convenient Use Cases: Use these dumbbells in your water aerobics class, during physical therapy sessions, or for group training at the beach or pool. They are designed to enhance your workouts, providing both resistance and hydration seamlessly.