4Pcs Large Travel Backpack, 40L/50L Size:40L the built-in luggage strap allows

the built-in luggage strap allows you to securely attach the backpack to your suitcase handle

It also includes 1 storage pocket for toiletries and 1 retractable padded shoulder strap

【Scientific Partitioned Storage】Seven scientifically designed storage compartments meet your daily needs: Stanley water bottle

6'' laptop and tablet

easily accommodating books

4Pcs Large Travel Backpack, 40L/50L Size:40L the built-in luggage strap allowsMeets Airline Standards Fits in overhead bin and under seat. Flexible for Personal Use 40L: Fits 3 5 days, perfect as a personal item. 50L: Accommodates 5 7 days, ideal for carry on. Multiple Compartments Clamshell design Fits a 40oz bottle Padded handles 5 Front organizer pocket 40 50L Spacious Capacity Choices 40L: 18" x 8" x 13", 3. 35lbs 50L: 20" x 9" x 13. 5", 3. 52lbs 3 Packing Cubes For Shoes: 16" x 8. 5" For Clothes: 13" x 10" x 4" For