The biggest difference between AOI.CYCLE design and others is we using the curve shape from stainless steel tube and omitting the seat tube structure. Also, in order to show the smooth shape of the frame and keep the surface texture of metal at the same time, we particularly choose stainless steel - SUS304 as our raw material. And because of the unique body design, AOI.CYCLE needs to be full hand-made which inherited the 33 years old handcraft skill from old generation.We pay attention to every detail to ensure the highest quality we can present to you.