I previously purchased this here, but I haven't had a chance to use it, so I'm putting it up for sale. The shoulder strap clasp is designed to come undone easily. This is likely to prevent strain on the neck if it gets caught in something like a bicycle, so please be aware of this. Black Nylon Width 29cm, Height 30cm, Depth 10cm Shoulder strap length is adjustable. 1 outer pocket 1 inner pocket