The shoulder strap balance adjustment design allows users to adjust the shoulder rest to the most comfortable position. The lockable shoulder strap can secure the backpack to a fixed object, preventing theft. The hidden luggage tag, made of lightweight aluminum, integrates with the Travel Sentry global lost and found system, improving the chances of recovery if lost.The backpack features a scientific storage design, dividing it into five sections: clothing section, shoe pocket, rain cover pocket, top quick-access pocket, and privacy pocket, enhancing travel storage efficiency. The shoe bag includes air ventilation openings and an adjustable flap for customized use. The top quick-access pocket provides access to the main clothing section via a Velcro opening. Additionally, there are zippered side pockets for last-minute items or a water bottle, and a safety pocket for wallets, passports, etc.