Ideal for enjoying music while jogging, walking, and skating. The trainer for iPhone features a wide stretch armband that can be adjusted with a pull buckle, fitting arms with a circumference of up to approximately 48 cm. The trainer includes a lightweight compartment with a window for your device and a perforated band with a sweat-wicking neoprene back. This allows for air circulation, keeping you and your iPhone cool and comfortable. With a transparent touch-through window, you have access to your multi-touch display, enabling you to adjust the volume, navigate through playlists, and perform all other functions with your touchscreen.