Approximately 25cm wide and 17cm tall. I bought this a few years ago, but I'm selling it because I don't use it anymore. I haven't used it much recently, but I did use it when I first bought it, so there is some wear and tear. Please purchase only if you understand this. CHUMS gray and navy shoulder bag with adjustable strap. - Brand: CHUMS - Color: Gray/Navy - Style: Shoulder Bag - Material: Polyester - Features: Adjustable strap Thank you for looking.