2013 new design travel backpack bag 1. factory sells directly 2.waterproof, durable 3.corlorful 4.ISO9001:2008 2013 New Design Travel Backpack Bagshengshizhixing --------15 years' experience in producing laptop bag,backpack, school bag, messenger bag, waist bag and so on.-------the bags are all with high control ISO9001:2008 and competitive price.