Lightweight and durable polycarbonate shell that is extremely resilient to cracking or breaking; manufactured with an eye catching deep metallic finish Four double spinner wheels assuring a stable base with multi-directional rolling with zero weight on your hand for easy travel Integrated 3-dial TSA approved combination lock for security; suitcase expands up to 2 inches for additional packing space Keeps items secure and wrinkle free with two large fully-lined compartments and web straps; multiple pockets allow easy access and organization Recessed "one-button" locking handle system for great maneuverability; this set is perfect for weekend getaways, family vacations and business trips