1. [High-quality materials]: This armband is made of waterproof material and can be easily bent, twisted or folded without deformation. The adjustable strap protects and stabilizes the device without slipping or shrinking. The back of the sports armband is breathable to allow air to pass through, thereby reducing the heat on the arm. For an easy fit, there are cushioning pads on both sides of the arm. 2. [Reflective strip design]: The phone armband with two highly reflective strips allows you to stay visible during outdoor activities. When running at night, the reflective strips of passing vehicles can clearly detect your presence. 3. [Safety protection]: The running phone holder with double-layer and double-zipper sports bag provides spacious space for your mobile phone as well as IDcredit cards, cash, keys, headphones and other accessories during outdoor activities. Never worry about losing them, and you can conveniently pick up your phone and listen to music. 4. []: The armband is 7.3-3.5 inches long and can accommodate mobile phones up to 6.7 inches. The phone holder armband is compatible with most mobile phones, suitable for iPhone 14131211ProPro MaxPlusMiniSEXs MaxXsXRX876Samsung Galaxy, etc., up to 6.7 inches.