Product Details: - External USB with built-in charging cable for your convenience - Material: Spliced Oxford. Bag is waterproof, easy to clean - “S” Shape Ergonomic Design: Fit your back very well - Large Capacity to hold your essential things - Laptop backpack for business, travel, hiking, casual use and suitable for students, men and women Specifications: - Accommodate computer size: 16 inches - Waterproof performance: Water Resistant - Lining material: polyester (polyester fiber) - Weight: 560 -Size: 28 x 12 x 41cm -Material: Oxford Cloth