ABS shell with front corner protectors for durability and protection, 2-inch expandable feature allows for additional packing capacity, Eight (8) spinner wheels system for smooth mobility Push-button retractable handle system for easy maneuverability, Built-in 3-digit lock for added security, Top and side carry handles for versatile carrying options The fully lined interior features a zipper divider for organized packing, One mesh zipper accessory pocket for convenient storage, and compression straps to secure belongings during travel Interior Dimensions: 29" H x 20.5" L x 12" W Exterior Dimensions (Including Wheels): 31" H x 21" L x 12.5" W - 9.5 lb