【5-Piece Luggage Set】The luggage set includes a spacious 28-inch large suitcase, a versatile 24-inch medium suitcase, a compact 20-inch carry-on suitcase. The backpack features a back sleeve so you can conveniently attach it to the retractable luggage handle. It is equipped with multiple functional pockets to meet different travel needs. 【4 Smooth & Quiet Double Spinner Wheels】Each suitcase features four 360° dual spinner -detachable wheels designed for smooth, quiet mobility.you can easily replace a single wheel if needed, extending the life of your luggage and saving you money. 【TSA-Approved Lock for Security】Kunel luggage comes with a reliable TSA-approved lock, allowing for easy access and secure relocking. At security checkpoints, officials can inspect your luggage without damaging the lock—keeping your belongings safe and secure. 【Sturdy Side Feet Protection】The luggage set include integrated side feet provide stable standing support, effectively preventing the main body of your suitcase from direct contact with rough surfaces. This design minimizes scratches and scuffs, ensuring your luggage maintains its pristine appearance over time. 【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.