The Mochila - MR1930SJ by Mark Ryden is a versatile and expandable waterproof PU leather backpack with 11 organized pockets and a USB charging interface (power bank not included). Made from waterproof PU leather, it offers durability and easy maintenance. Feature Specification Dimensions 46cm x (28-38)cm x 20cm; Shoulder Strap: 40-83cm Weight 1.1 kg Material Oxford fabric + PU fabric; Scratch-resistant, wear-resistant, and splash-proof Compartment Design Multiple layer storage, 180-degree opening Laptop and Tablet Compartment Dedicated 15.6-inch laptop and 12.9-inch iPad compartments Zipper Front-facing splash-proof hidden zipper Expandable Side Pocket For water bottles/umbrellas; expandable Shoulder Strap Design Stow-able shoulder straps with a back mesh pocket Back Trolley Sleeve Built-in sleeve to slip onto luggage handles Chest Buckle Front chest support buckle External USB Charging Port Second-generation external USB interface for convenient charging