1.[Adjustable Weight Options]: Customize the resistance by adjusting the amount of filling in the sandbag to suit your personal workout preferences. Whether you prefer kettlebell style exercises or traditional weight training, this feature allows you to achieve optimal training results 2.[Reinforced Structural Design]: The filling port is equipped with reinforced to prevent tearing and ensure durability. Additionally, the closure securely seals the contents, prevent leaks and ensuring security and stability during workouts 3.[Flexible Training Choices]: Tailor the weight of the sandbag according to your specific training needs for a versatile workout experience. This flexibility makes it ideal for various levels of exercise intensity and different types of fitness routines 4.[Versatile Workout Applications]: Seamlessly transition from home workouts to outdoor training with this sandbag. Whether you're engaging in strength training at home or high intensity interval training () outdoors, this sandbag supports your fitness goals with great convenience