Compact XS size. There are two pockets on the outside front and one on the inside. You can functionally organize small items in your bag, such as lipstick and eye drops, earphones, and chargers. It can be used as a storage pouch or bag-in-bag.  By attaching a strap, it can also be used as a mini-sized shoulder bag (straps sold separately)

extra small: 6"L x 4.5" x 2.2" D