High-Quality 4-Piece Luggage Sets: These suitcase sets are made of PP Material that is extremely resilient to cracking or breaking. They feature a textured finish to prevent scratches, keeping lightweight luggage sets beautiful after trip. Safety Design: A side-mounted TSA-compatible lock allows the authorities to safely unlock and relock the case for inspection when you cross the border, saving you inspection time. The external YKK zippers are so smooth and high-tensile-strength that they can resist damage from daily use and abuse. Wheels And Handles: 4 double 360° mute spinner wheels provide smooth movement in all directions, whether on cobblestones or pavement. The top and side grab handles are sturdy, elastic, not easy to break, and easy to carry. Push-button locking handle adjusts to different stages, offering comfortable maneuvering to accommodate travelers of any height. Main Compartment Interior: The interior of the main compartment also has a hanging side zipper pocket and a divider panel with a zipped mesh pocket and clips to keep valuables in place. All the zippers in the interior are YKK zippers. Dimensions: [ 14": 12.2"L×6.6"W×13.2"H; 20": 15.4"L×9.0"W×22.0"H (includes wheels) ]; [ 24": 18.0"L×10.7"W×26.0"H (includes wheels) ]; [ 28": 20.5"L×12.6"W×29.9"H (includes wheels) ]. 20-inch carry-on luggage is airline-approved. 3 pieces set with cosmetic case also come with luggage tap.And these luggage sets come with a 5-year limited warranty, providing long-lasting protection for your investment.