Large Capacity Expandable Laptop Backpack USB Charging Port 。?【Large Capacity & Lightweight】Size: 12.6 x 3.15 x 18.9 inches ,weight: 1.65lbs(750g).This slim laptop backpack for men women features a spacious main compartment that can hold laptops up to 17 inches,along with multiple pockets for your items,keep your essentials organized and secure. ?【Slim & Expandable Backpack】:This UPGRADE 17 inch business backpack for men is ultra compact and sleek,also expandable to carry big objects.Open the durable YKK zippers,the packaging space can be increased from 15L to 27L.The expandable travel laptop backpack for men perfect for daily commutes,business,trips,or weekend getaways. ?【USB Charging Port】:With built in USB charger outside and built in charging cable inside,this slim backpack for men gives you access to it via USB port outside on the computer bags for laptops (Power bank is not included).Free up your hands so you can use your electronic devices while walking.This slim laptop backpack is a perfect choice for everyday use or professionals on the go. ?【Waterproof & Anti-theft】:The work backpack for men use new Oxford water-resistant material,with YKK zippers,which is water-resistant, durable and fashion, ensure long-lasting daily use. With a hidden zip pocket on the back,the anti theft waterproof laptop backpack gives you a little more ways to keep your phone, wallet, passport, and other valuable items in safe place.This waterproof travel backpack for men will be a good partner for business,trips,work or everyday