12in wide x 11-1/2in tall x 5in deep. This stylish bag is easily convertable from a shoulder bag to backpack. Fun to sew with lots of pockets! Magnetic snap under the flap keeps everything inside secure and opens wide when needed with 2 side snaps. Zipper pocket on the back and 4 inside pockets. The straps can be made any length. Great for classes and kits. Full color instructions with pictures. Use PSBD hardware kit (PSB136S, PSB136G, PSB136B) or (4) 1in Swivel Hook and D-Ring Sets (PSB220, PSB221, PSB222), (1) 3/4in Magnetic Snap (PSB210, PSB211, PSB212), and (2) 1/2in Magnetic Snaps (PSB213, PSB214, PSB215)