Complete 6-in-1 Travel Set: Includes 16-inch (carry-on), 20-inch (small checked), 24-inch (medium), 28-inch (large checked) hardside suitcases, plus an expandable travel duffel bag and a waterproof toiletry bag. Perfect for family trips, long vacations, or business travel – keep everything organized from packing to return.Built-in TSA Lock & Secure Design: Each suitcase features an embedded TSA-approved combination lock, allowing security to inspect your bags without damage. Protects your valuables throughout international and domestic flights.Expandable Duffel & Wet/Dry Separation: The included travel duffel bag expands for extra packing capacity. It has a dedicated waterproof compartment to separate wet items (swimsuits, toiletries) from dry clothes, or store dirty laundry – no more leaks or odors.Silent 360° Spinner Wheels & Adjustable Handle: Ultra-smooth double spinner wheels rotate 360° for effortless maneuverability in any direction. The lightweight, corrosion-resistant telescopic handle adjusts to 2 heights, fitting users of all statures.Durable & Scratch-Resistant Shell: Made from premium ABS material, the hard shell is lightweight yet impact-resistant. The textured finish significantly reduces visible scratches from baggage handling – looks great trip after trip.