Black nylon tank bag with a transparent pocket, secured to the tank with 4 magnets or buckles. - Model: Tank Bag - Color: Black - Material: Nylon - Features: Transparent pocket The size is as follows, and I think it's a small size. Approximately 29cm long, 19cm wide, and the height can be extended with the surrounding zippers, approximately 11-18cm. There is a small pocket in the front, and when you open it, you can put things in the transparent pocket. Accessories include a rain cover, one carrying belt, and two buckles. Thank you for viewing.