I don't think it is necessary to send anything related to sports. It's a birthday after all. Girls like romance. Please keep a low profile and invite. If it is a boy, you can send flowers, a big bear, or some cosmetics, lipstick, perfume and so on. Or send a cake, perhaps not necessarily a gift, but also a part of your birthday, which is an unforgettable experience. I think she will like it and be very happy. For example, find her good friend and go to a rental house for a day to make it warm and romantic. If she can cook by herself, prepare some ingredients and prepare two good dishes, then we can pack jiaozi, play mahjong and play board games together. It's good.

If you don't want this, you can give her what she needs, ask her good friend what she needs and buy her what she needs. She will also feel very gratified that you understand her thoughts and her thoughts, which will give her a warm feeling.

If she likes sports, it is ok to give her something about sports. You can buy some wearable devices, a Bluetooth headset, listen to some rhythmic music while running, and buy a sports bracelet or sports watch to record your daily exercise. How much money you have depends on your relationship with her. I like the bracelet made by Huawei very much. It is powerful and easy to use. The small one can be a sports arm bag. You can put a mobile phone, a key and a key card when you exercise. Besides, it's very popular now. When you go out, you can carry a sports wall bag with some necessary items in it. It is also very convenient.