AiBOUSA Ultrathin Sweat Resistant Adjustable Sports Running Armband with Screen Protector Headset Hole for iPhone 6 Plus/6S Plus 5.5 inch (Pink) Designed specifically for iPhone 6 Plus / 6S Plus (5.5 inches). Very easy to insert and remove your device. Made of Lycra fabric material, with softness, no deformation. Meanwhile your arms feel comfortable with it. Anti-aperture design, Reflective Safety Band ensures that you are seen while running at night Four ports for headphone, enables to access to headphones, buttons, touchscreen feature on the cell phone. Very easy to connect to headphones during workout. Ultra thin and light design, easily bends, flexes, twists, and folds without warping.In actual measurements: 11.8-14.9 inches [30-38 cm], flexible enough to fit small and big arms.