For one to two weeks away, a little extra room goes a long way. The Medium Flex 3 expands when the packing list grows, whether it’s another pair of shoes, a few more outfit options, or something very worth bringing home. WhisperGlide™ 360° Wheels roll smooth, StopLock™ Brakes stay put, and Handsfree Hideaway Hooks hold the overflow. Inside, the Outward-Opening Interior and Patented CompressMore™ System make more fit beautifully. All protected by our award-winning ShockShield™ Shell.