3 PIECE LUGGAGE SETS - The luggage sets of 5 pieces offers 20" carry on luggage,24" medium checked luggage,and 28" large check-in suitcase.Nestable for easy storage, the multi-functional suitcase set can meet all your travel needs. RELIABLE TSA LOCK - A secure TSA lock makes it easy to unlock and relock your travel luggage, and at security checkpoints, your luggage can be safely inspected without having to cut or damage your lock. Zipper & Telescoping Handle - We can easily open and close the luggage sets without worrying about the zipper getting stuck or damaged. The 3-section telescopic handle allows you to easily hold the suitcase set without getting tired even on long walks. DURABLE SPINNER WHEELS - The 360° rotatable silent spinner wheels are walk-tested and make it easy to maneuver your hard shell suitcases, even in busy airports or stations. HIGH-QUALITY MATERIALS - The suitcase set is made of more durable and lightweight high-quality ABS material, effectively adding a protective layer to the hard shell luggage sets, making them more impact-resistant. The Luggage Sets Made of lightweight and durable material upgraded with strong resistance to stress, high and low temperatures and impact. Built-in reinforced corner guards provide extra protection and minimize damage. Large storage space and fully lined interior with zippered compartment to keep your items organized. Low profile top and side handle provide for ease in handling. TSA Lock Set Password Instructions: 1. The initial password of lock is 0-0-0. 2.Press the reset hole with the tip of the pen. 3.Set the new 3-digit code while pressing. 4.Now you can open the lock with the new password.