I bought it for my three-year-old son. My son especially likes to run. He is always full of energy. I always need to chase him in the mall and parking lot, I like him running, but it also becomes my problem. I used it after receiving this product, which played an important role in our Disney trip. This makes me feel at ease, I don't have to worry about my child flying into the crowd lost or injured. Its security lock is very good, which makes me very satisfied, it can prevent my children and other strangers from opening it. It is worth mentioning that they also presented a beautiful bracelet, my wife likes it very much, I like them very much, I will recommend it to every parent who needs it.