The Protector II - MR9405SJ by Mark Ryden is an upgraded anti-theft backpack?made from EVA and Oxford fabric. It features a TSA lock, a 3rd gen USB charging port, a side bottle pocket, and a back anti-theft pocket. Features Specifications Model 9405 Upgraded Version Size 44cm x 30cm x 16cm Weight 1.37kg Color Upgraded Classic Black Shoulder Strap Adjustable 45cm - 90cm Material EVA + Oxford Fabric Water and Stain Resistance Yes Scratch and Wear Resistance Yes Interior Lining New Outdoor Wear-Resistant Technology, Durable, Stretch-Resistant Capacity Pockets (Top Accessory Pocket + 180-degree Main Compartment + Side Bottle Pocket + Back Anti-Theft Pocket) Dedicated Compartments Exclusive for 15.6-inch Laptop + 11-inch iPad, Shock and Impact Protection Expandable Body Expandable by 30%, 20L normal capacity, 26L expanded, 5cm thickness increase Security TSA Combination Lock Charging Interface Integrated 3rd Generation External USB Charging Port (Non-Removable) Zipper YKK Brand, Durable, Smooth Operation