Nike Running shoulder bag red NRN06620OS The Nike arm band with headphone output is recommended for runners. The model is compatible with iPod Nano for playing playlists during training. Construction made of fabric pleasant touch . Transparent insert on the front allows the use of the touch screen. Adjustable strap velcro. Reflective details.  Technical data:· material: 52% nylon, 32% SBS, 10% TPU, 6% polycarbonate dimensions "windows": 3.5 x 3.5 cm