The bag is made of a dirt-resistant fabric. It has a detachable, adjustable strap. The bag has one compartment, two open pockets and one zipped inside for small items and a phone, and one outside zipped pocket. The bag has practical handles. Be sure to check out our entire collection of BIG STAR handbags and backpacks. Dimensions: Width - 50 cm Height - 31 cm Thickness - 34 cm