Hello Kitty Messenger Bag polyester Polyester. Space to write name inside. Outside: 2 mesh pockets, 2 velcro pockets and zipper pocket. Inside: 1 regular pocket and 3 pen slots. Detachable shoulder strap approx. 50 inch (127 cm). Approx. H 10-3/4 inch X L 4 inch X W 13-1/2 inch.