Cartinoe Elite 13" Protective Bag Shoulder Bag Carrying Bag with Accessories Bag for Mac Book Pro / Macbook Air 13-inch / All 13" Laptop / most of Acer/ ASUS/ Dell/ HP/ Lenovo/ Sony/ Toshiba notebook Large use of space, as many as five accessories bags Ergonomic shoulder pads, thickness increases, make you and feel comfortable Inside Zipper Pocket Adjustable shoulder strap Innovation capabilities match interlayer antiskid zipper, can be used with pull rod box