The Baubike is constructed around the geometric shape of square and equilateral triangle. This frame formation allowed designer Michael Ubbesen Jakobsen the opportunity to stretch the top tube as a method of increasing the range of use for the bicycle. An extra seat or luggage rack is easily added at a moments notice. Quite a novel concept. (via DB).

Images of extra saddle and luggage rack in use after the jump.

curated mag - Michael Ubbesen Jakobsen "Baubike"

curated mag - Michael Ubbesen Jakobsen "Baubike"

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