Encased Otterbox Commuter Workout Armband for iPhone 6 / 6S (4.7) [Case not Included] (Encased Compatible with the iPhone 6/6S (4.7) Otterbox Commuter case (case not included) COMFORTABLE lightweight neoprene will form to the arm but will not stretch out of shape. UNIVERSAL FIT: Armband is small enough to fit slim arms yet expands up to 14" SAFETY: Highly reflective pattern provides nighttime jogging protection Maintain direct touchscreen access and button functionality during your workout.