This is a 3-way bag from Reflect that can be worn diagonally or over the shoulder. It has many pockets, including an outer pocket, and is designed for ease of use. The inner bag can also be used as a pouch or as a second bag with a shoulder strap. The size is: Height: 21cm Width: Top 34cm, Bottom 27cm Depth: 10cm The inner pouch is: Height: 20cm Width: 26cm The material is nylon. Thank you for viewing.