FENRUIEN Anti-Theft Hard Shell Backpack 15.6-Inch,Expandable Slim Business Travel Laptop Backpack for Men,Water Resistant Black Laptop Bag with USB Port

[ INVISIBLE EXPAND ] : Dimensions: 17.7 x 12.6 x 4.7 ~ 7.1 inches, capacity: 18L ~ 26L. Expandable backpack has smooth zippers on side. Once pull at the zipper, bag will offer large capacity as much as 26L so that you can store more stuffs (Laptop pocket size: 15.7 x 11 x 1.2 inches)
[ DOUBLE PROTECTION ] : FENRUIEN armored laptop backpack is made of high-density waterproof PC&ABS hard shell and oxford fabric (zippers aren’t waterproof). Thickened pearl cotton and soft polyester lining will give protection to your laptops from shock and scratch
[ TSA FRIENDLY FEATURE ] : The lightweight go back and forth backpack with scan smart technology may also be freely opened 90-180 degrees, allowing you to quickly pass the airport security check and keep your things tidy. TSA customs lock can give protection to your items from thieves(Please don’t set a password before reading the instructions)
[ ERGONOMIC DESIGN ] : Adjustable anti-slip breathable S-shaped mesh shoulder straps with plentiful sponge assist relieve the stress from your shoulder. 3D honeycomb breathable back cushion can reduce the sultry feeling of the back
[ SMART USB PORT ] : Built-in removable charging cable is convenient to charge your mobile phone by connecting your power bank, this tech backpack can free your hands from power bank (Power bank isn’t included)