Compatibility - Uses 4 to 6.7-inch smartphones, for Android, iPhone 5 to iPhone 12 Pro Max. In the common cases, brands could be compatible with many cases. Please read the description to see complete compatibility phone models. Fits All Arm Sizes - Adjustable Band and Highly Elastic Velcro make it easy to adjust the armband to your arm and fit all arm sizes. An extra fabric layer makes the armband sweat-resistant when doing workout activities to make your skin more breathab 360° Rotation - Sports mobile phone armband, which can be rotated to any angle you like, Never miss a perfect moment with 360° rotation. This rotatable armband lets you use the mobile phone functions whatever you are doing and wherever you are. Just