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With a simple appearance, the bike offers two different riding styles: one is fixed-gear and the other is single-speed for easier riding.
To achieve this concept, the bike's top tube and seat stays are replaced by thinner steel bars; there is a special rear hub that can turn into two modes, single speed freewheel or single cog; and the seat is also designed to be removed or assembled quickly for adjusting which way of riding the user likes.