Trainers by oki kutsuthe osaka neo slip on sneakers feature a neoprene upper padded heel tab and white rubber sole black white neoprene upper leather sock lining rubber soleabout oki kutsujapanese inspiration british design european quality oki kutsu is a luxury sports collection exclusive to office meaning big shoes in japanese the oki kutsu collection consists of flatforms and chunky bold silhouettes taking inspiration from the streets of harajuku