If you need extreme protection for your business gear, you can rely on Rimowa to deliver. The Topas Business Trolley ($830) is an ultra-lightweight case made of aluminum-magnesium to protect its contents against high humidity and strong fluctuations in temperature. The Topas is built with a height-adjustable telescopic handle, large ball-bearing castors, removable interior file division and a combination lock that can be retracted in the frame.