M Uneek 360Keen's original open air sneaker goes modular, lighter (no solvents!), and ultra adaptable with a removable engineered knit liner and precision cord design for movement on multiple axes. Simple design, minimal parts. Original Fit has generous space across the forefoot for toes to splay Contoured arch for midfoot support Recycled plastic bungee cord and lace lock toggle Injected foam midsole Resilient foam insole with arch support Minimal waste