1. Anti-slip design---This mobile phone armband has anti-slip particles inside to ensure that the armband will not slip off during exercise. Make sure your phone stays in place during the toughest workouts! You never have to readjust or worry about it slipping off during sports activities. 2. Glow at night---The armband is designed with a reflective surface that glows at night, making you safer when exercising at night. The large area of reflective stripes enhances night visibility and night running, making you safer when running at night. If you like night running, this armband is exactly what you need. 3. Soft and light---The running armband is made of ultra-light material, which is soft and comfortable, easier to wear and fits the arm better. The flexible armband is lightweight and easy to wear on your hand, you will not feel it when exercising, and it will not scratch your skin when exercising. It will not squeeze and damage your phone, ensuring the safety of your phone. 4. The sports armband can hold the necessities you may need, such as mobile phoneskeyscashcredit cards, door cards, room cards, MP3s, tissues and ID cards, for your convenience. Flexible, lightweight and easy to wear. Suitable for wearing while taking a walk and enjoying music.