Set Composition: Typically sold in sets of three, with common sizes often referred to by their carrying capacity (e.g., 25kg, 15kg, and 10kg).
Mobility: Equipped with 360° spinner wheels (often 8 wheels total per bag) for easy maneuverability.
Security: Usually includes a 3-digit combination pin lock system.
Design: Features a distinct textured, scratch-resistant "ray" pattern on the hard shell.