This item is unused. It offers a spacious interior and is cost-effective, making it perfect for trips home. There's also a YouTube video about it, so please take a look: https://www.youtube.com/watch?v=EKtrVqkBXQ8 APLLE Car Roof Bag Includes instruction manual and storage bag Roof Bag APLLE Roof Carrier Bag 100% Waterproof Cargo Bag Roof Bag Foldable Convenient to Carry Large Capacity 425L 8 Belts Easy Installation Double PVC Waterproofing High-Strength 500D Polyester Waterproof Shielded Zipper Lock Rainproof Snowproof Windproof For Camping, Travel, Snowboarding, Camping, etc. Includes 6 door clips. Also for cars without roof racks. Includes storage bag. Includes non-slip sheet. Includes Japanese instruction manual (Black) *Size 112mm x 86mm x 43mm Approx. 2.5kg Capacity 425 liters Storage size 25cm x 37cm x 13cm I have kept it stored at home without using it after purchase. Please consider this with understanding. Although there are 5 books, you won't need them if you have a roof carrier, and basically 4 are sufficient.