Top quality luggage sets. PC material for hardshell. which makes the luggage more durable. lighter and impact-resistant. 21in is best for carry on. 29in expands 20% for more spaces.Organized and Spacious Interior. The fully lined luggage includes a handy divider and an interior organizer with zippered pocket for smaller items.Side-mounted TSA LOCK with smooth YKK zipper act to deter theft. ensuring that only you or a TSA agent have easy access to your belongings when traveling. added security and convenience. Multi-directional spinner wheels to provide 360° effortless mobility and ease on traveler's wrist. re-engineered lightweight.Adjustable 3-level aluminum telescoping handle allows you to quickly maneuver in tight spaces and it's sturdier than most of the telescoping handle on the market. The top/side soft reinforced grip handles for easy carrying when in a hurry. or it can be really handy when lifting the suitcase with heavy weight.