Satch Personalizable Ergonomic School Backpack 30 L combines an adjustable ergonomic back system with practical, well-organized storage for daily use. Key attributes: Blue | Blu | Polyester (PET) | Water-repellent | Dirt-repellent | Adjustable front/chest straps to distribute weight | Headphone outlet | Expandable external pockets | Mesh pocket on lumbar belt | Optimized internal organization | Ergonomic back panel | Reflective strips | Personalizable surface | Dimensions & fit: 30 x 45 x 22 cm (L x W x H) | Weight 1200 g | Volume 30 L | Adjustable back length: 140–180 cm to fit varying torso lengths | Ergonomic back panel for support | Composition & care: Polyester (PET)