This bag can also be used as a popular sacoche bag when the flap is removed. The 2-way design allows you to quickly transform it into a playful and casual shoulder bag. The material is made of 600D (denier) thick polyester fabric that is hard to see through, and the material is sturdy and thick so it can be used for a long time. The lining is water repellent and stain resistant. Military embroidered patch for added casual vibe.