1. The inner bag is the underwear of the notebook, effectively protect the appearance of the notebook from scratches and play a role in preventing wear and tear on the shell. 2. Inner core: thin and high elasticity sponge, plus cotton material, more considerate and comfortable 3. No zipper design, to avoid scratching 4. Rubber material, can be used as a mouse pad 5. Elastic band design, to avoid the flap of the pocket head turned out, off 6. Note: Please select the computer specifications less than or equal to the internal size of the computer bag package