The store is for you! If you are not satisfied with the product, please contact me first and do not leave negative feedback lightly. Thank you, have a good day Quality boutiques are at your service! Note: This product is a best-selling item in the store. If the current color stock is insufficient, it will be replaced with other colors at the same price and shipped randomly. Please understand! Best wishes. [Product Name]: Mini Dumbbells [Material]: The surface is dipped in a special process, and the interior is integrated with cast iron blocks [Specifications]: 1 kg [Color]: the first main picture is the delivery standard [Delivery quantity]: 2 pieces [Product description]: Bright colors, light and flexible, exquisite workmanship, special surface treatment, which can avoid damage to the floor. It is an essential product for yoga, aerobics, body shaping and weight loss. [Features]: Thanks to the special surface treatment, the safety performance is naturally improved and there is no impact on the ground. (Since the surface layer soaking process needs to leave pores during processing, there may be slight rough marks on the surface of the product. This is not a quality problem and does not affect the use.) [Appropriate crowd]: It can be used by women, men, children, middle-aged and elderly people. [Main function]: The dumbbell is a simple piece of equipment used to strengthen muscle training. Its main material is cast iron, and some are covered with a layer of rubber or plastic, or frosted. Its use is for muscle strength training, muscle compound movement training. Patients whose muscle strength is weak due to exercise paralysis, pain, long-term inactivity, etc., hold a dumbbell and use the weight of the dumbbell to exert resistance against the resistance and train muscle strength. Dumbbells can train only one muscle. If you increase your weight, you need the coordination of multiple muscles. They can also be used as strength training. [How to use]: 1. Choose the right weight before practicing dumbbells. 2. The goal of exercise is to increase muscle mass. It is better to choose dumbbells with a load of 65% to 85%. For example, if the load that can be lifted is 10 kg each time, you should choose dumbbells weighing between 6.5 kg and 8.5 kg for the exercise. Practice 5-8 groups a day, each group moves 6-12 times, the moving speed should not be too fast, the interval between each group is 2-3 minutes. If the load is too large or too small, the time interval is too long or too short, the effect will be bad. 3. The goal of exercise is to reduce fat. It is recommended to do 15-25 times or more per group during exercise, and the interval between each group is controlled within 1-2 minutes. If you think this kind of exercise is boring, you can exercise with your favorite music or follow the music to do dumbbell aerobics. The benefits of long-term dumbbell exercises: 1. Long-term adherence to dumbbell exercises can change muscle lines and increase muscle endurance. Doing heavy dumbbell exercises regularly can make muscles stronger, strengthen muscle fibers and increase muscle strength. 2. It can exercise upper limb muscles, waist and abdominal muscles. For example, when doing sit-ups, holding dumbbells with both hands at the back of the neck can increase the exercise load on the abdominal muscles; holding dumbbells Doing side bending or rotation exercises can exercise the internal and external oblique muscles; holding dumbbells can exercise shoulder and chest muscles. 3. Can exercise lower limb muscles. Such as holding dumbbells to squat with one foot, squat with both feet, etc. Shop Tips: 1. The size is measured manually, please allow the error (1-3 cm). 2. Due to different monitor pixels, there may be color difference, please refer to the actual product. 3. After receiving the package, if you have any dissatisfaction, please contact me first, do not leave negative feedback easily, thank you and have a nice day.