Remark: This product is a top 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 at random. Please understand Best wishes. [Product name]: Mini dumbbells [Material]: The surface is immersed in a special process, and the interior is integrated with cast iron blocks [Specifications]: 0.5 kg [Color]: the first main picture is the delivery standard [Delivery quantity]: 2 pieces [Product description]: Vivid colors, light and flexible, exquisite workmanship, special surface treatment, which can avoid damage to the floor. It is a must have 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 must leave pores during processing, there may be slight rough marks on the surface of the product. It is not a quality problem and does not affect the use.) [Suitable 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 are increasing your weight, you need the coordination of several muscles. They can also be used as strength training. [How to use]: 1. Choose the right weight before practicing the dumbbells. 2. The aim of the exercise is to increase muscles. 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 per 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 to 25 times or more per group during exercise, and the interval between each group is controlled in 1 to 2 minutes. If you think this kind of exercise is boring, you can work out with your favorite music or follow the music to do aerobics with dumbbells. The Benefits of Long Term Dumbbell Exercises: 1. Long-term adherence to dumbbell exercises can alter 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 load of abdominal muscle exercises; holding dumbbells Doing lateral flexion or rotation exercises can exercise the internal and external oblique muscles; holding dumbbells can exercise the muscles of the shoulders and chest. 3. Can exercise the muscles of the lower limbs. Such as holding dumbbells to squat with one foot, squat with both feet, etc. Tips from the store: 1. The size is manually measured, please allow the error (1-3cm). 2. Due to the different monitor pixels, there may be some color difference, please refer to the actual product.