High-quality Material: This product is made of high-quality aluminum, PC, ABS, PU, and rubber, which combines impact and wear resistance to ensure that the product is strong, sturdy, and has a long service life. Suitable Size: The size of 4.17 * 9.45 * 22.05 inches meets the maximum boarding luggage size specified by the International Air Transport Association and various airlines. You can rest assured to bring it on the plane without going through check-in procedures. Large Capacity: There is a dedicated compartment inside the independent front compartment that can accommodate 14-15 inch laptops. Multiple storage areas can store small pad devices such as power banks, phones, and tablets. With an internal capacity of approximately 7.93 gallons and well-designed zoning, you can pack approximately 33.07 lbs of luggage in an orderly manner, making it more than enough for 5-7 days of solo travel. High Security: The main warehouse uses two three-digit password locks, which have good anti-theft capabilities, allowing you to safely put valuable items inside. The filled shock-absorbing cotton and safety straps can prevent damage to electronic devices, providing thoughtful protection for your important devices. Powerful Load-Bearing: The reinforced aluminum frame and three-layer PC material with good elasticity have a strong load-bearing capacity (220.46 lbs), allowing you to sit on it and rest for a while during the tiring journey.