nubrella-sketch-rain-shelter-hiking-research-by-frits-ahlefeldt

Sketch of the Nubrella umbrella design

Research drawing by Frits Ahlefeldt, Hiking.org

Published by

Frits Ahlefeldt

Founder of Hiking.org - Researching, writing & sketching up thoughts, understandings and ideas for a sustainable future, connecting thrive, trails, places and technology