Premium Material Running Phone Belt: The Workout Running Accessories Waistband made of Lycra fabric, soft, waterproof and sweatproof. This running cell phone holder can only be used for water splashing, can't soak in the water Ex-large Pocket and Reflective Strip: Suitable all kinds of cell phones, keep your cell phone from scratches. Professional reflective strip takes care for your safety while running or walking in the dark Adjustable Waist Strap belt bag: Fits waist sizes from 26" to 40.5" with flexible and adjustable belt, Prevents items from bouncing around while you running, jogging, walking or traversing obstacles Earphones Hole Desgin: Pleasant and relaxed aerobic workout experience. Always having your phone with you while working out (for playing music, tracking your workouts, heart rate, running routes) Professional After-sales Team: Not only bought the product, also Get the best quality service. Believe us, you must will like our products. Any question, all can contact us.(Inclued within 24hours reply/return/refund) US Patent Office Certificate: Our running belt has a patent certificate issued by the US Patent Office, patent number: US D865356S