Casual business note computer bagPackage internal structure: ID bag, mobile phone bag, laminated zipper bag, zipper pocket, computer pocket Function: waterproof, breathable, wear resistant, lightening, shockproof Features: 1. The outer compartment surface strip texture prevents frictional pilling. 2. Built in thickened pearl cotton, stable back weight, breathable. 3. The bottom is lined with lining, which is firm and firm.