TROIKA SMART BACKPACK Troika's Smart Backpack is perfect for on the go without worrying running out of power. Troika's Smart Backpack has room for a battery bank inside to charge electronics via the integrated external USB port. Main compartment fits laptops and tablets up to 13 inches (15 Inch Apple Air), documents and folders. Troika's Smart Backpack also includes a compartment of elastic band loops, perfect for organizing pens and everyday carry accessories. Padded backpack straps can be stowed. Backpack has a loop for attaching bag trolley. PRODUCT FEATURES Designed by TROIKA Design Werkstatt Install power bank inside to charge mobile devices via integrated external USB port Main compartment for documents and laptops/tablets up to 13 inches Elastic band loops for organizing pens and everyday accessories Stow-able, padded shoulder straps Loop for attaching to trolley luggage Materials: polyester Color: grey/black OR Blue/Black