Expandable Hiking Backpack Large 6000ci-8000ci Camping Backpack Scout Daypack Aluminum Frame Sport Pack Outdoor Big Travel Bag 100% Polyester Imported Material: 1680d/840d high density fabric Expanded dimension: 42" x 20" x 16", expanded volume: 8000 in3 Unexpanded dimension, unexpanded volume: 6000 in3 Yak plastic buckles Removable top compartment can combine with waist strap to become a deluxe fanny pack