The NIKE Running Zip Pocket Expandable Waistpack is a unisex waist bag designed for running and jogging. It is made of 100% nylon material and comes in pink color with a black adjustable strap. The bag has one zip compartment and is expandable to fit most sizes. It is compatible with storage for keys and other small items. The waistpack is perfect for walks and features an adjustable size, making it comfortable to wear.