San Clemente 30 4Wheel Expandable Upright Moon Silver. The San Clemente hardside collection is lightweight and constructed out of a rugged PC Alloy shell with a distinctive textured finish that provides heightened protection against the elements while traveling. These cases are equipped with a variety of valuable features such as a fully lined interior, a multi-stage lock handle system, a built-in TSA lock and our unique Lock-Rite locking wheel system.