This Berkeley Bag is simply amazing! It is a backpack that can also be used as a shoulder bag. Made of PU leather exterior with poly fabric lining. It has a two-way zip top closure, exterior zippered pockets (front and back), multi-functional internal pockets, and two bottle pockets on the sides. The backpack straps are adjustable, and it includes a detachable multicolor shoulder strap. Measures approximately 30 cm W x 32 cm H x 14 cm.