Herringbone knit cotton The fabric is easy to use, not too thick or thin. 38cm wide x 31cm long This was included when I purchased the bag. It has plenty of storage capacity and is a convenient size for lessons, shopping, etc. *Of course, it's genuine. Used a few times. There is a faint orange stain on the lower left of the back. Please see the photos. (In my personal opinion, it's not very noticeable. It's on the bottom of the inside, which touches the body, and I don't think it's visible when in use, but please refrain from purchasing if you are concerned.) Please excuse the wrinkles on the shoulder strap after washing. Color: White Pattern/Design: Stripes Material: Cotton