This computer shoulder bag with Spill resistant material obstructs water and vapor effectively.Don't worry about splashing water or light rain. Features a polyester foam padding layer and soft lining for bump and shock absorption and protection of your computer from accidental scratches. Front zippered compartment with organizational pockets pens, keys,wallet,credit card,cell phone,and other items. Main compartment for storage laptop,iPad,book,notebook,E-book reader and other items. Back Trolley Belt Design As we know it’s hard to whom frequently runs back and forth at the airport with bulky luggage or a commuter on the train each day. Back belt design provides the funtion of fixing to the luggage trolley. Wide Luggage belt securely attaches laptop bag to most rolling luggage. You can alter how to carry depending on your needs.Considerate design is the back trolley suitcase belt for ease use during business trip or travel.