This product is made of nylon fabric, high-quality zipper, and is meticulously crafted. The product quality is guaranteed. The small waist bag is equipped with reflective strips, greatly improving the safety factor of your nighttime travel. There is also a headphone jack in the waist bag, which allows you to put your phone or walkman inside and listen to them as you go. The folded size is 30 * 11 * 1 cm