Material:600D Nylon Size:31.0X23.0X6.0CM Color:Many colors available Other details about the bags are following: 1. Front pocket with flap for the data or other paper; 2. One compartment for the 15.4 inch laptop; Inner pocket on the front part for the paper too; The webbing on the bottom of bag for fixing the laptop; 3. Handle for being convinient to handle; 4. Strong shoulder with the pad connect the bag; 5. Many color and sizes available Size:31.0X23.0X6.0CM