Trainers by oki kutsuthe kazuono zip front sneakers feature a simple clean silhouette with grey leather upper padded heel tab and white rubber sole grey leather 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