The Satch Customizable Ergonomic Backpack is designed for ultimate comfort and functionality, making it an ideal choice for students and travelers alike. Key attributes: Blue | Polyester | Water repellent | Dirt resistant | Adjustable back length | Expandable external pockets | Headphone port | Reflective strips | Mesh pocket on lumbar belt | Dimensions & fit: 30 x 45 x 22 cm | 11.8 x 17.7 x 8.7 inches | Adjustable fit | Composition & care: Polyester | Wipe clean with a damp cloth