Ratio merges executive sophistication with the innovation of StrideAlign technology. Every aspect of the travel experience is improved with the dynamics of StrideAlign technology which has unique, gravity-hugging profile and wide wheel base assist a Glider case in remaining stable on all surfaces and terrains. The wider, twelve position, StrideAlign technology contoured handle, tailors to the travelers physiology and allows multiple points of comfort and interaction. The ergonomic proportions of StrideAlign technology make carrying a Glider case easier. The effortless wheel motion is achieved by the use of twelve individual, hardened steel cartridge bearings in the wheel system. Tailored interiors with outstanding organization ensure elegant packing of a Glider case. Hartmann's Ratio Glider cases, with StrideAlign technology, bring elegance to movement.