13-14 inch Universal Elastic Thread Button Portable Laptop Inner Bag1. Made of waterproof PU material , which is oil-proof, wear-resistant and corrosion-resistant2. Fiber lining , delicate and soft for a better fit , to prevent the computer from being scratched in daily life3. Lightweight design for easy carrying and multiple compartments for easy storage4. Fashionable and minimalist appearance, suitable for business, travel, school and other occasions5. Spec:-13-14 inches: external size 360x247x5mm, inner size 330x230x20mm, net weight 202g-15-16 inches: external size 415x290x5mm, inner size 375x260x30mm, net weight 253g