Velcro

Velcro

!A shoe using hook-and-loop closures

History

!Tiny hooks can be seen covering the surface of this [bur. The design of hook-and-loop imitated this natural mechanism for seed dispersion.](//upload.wikimedia.org/wikipedia/commons/thumb/1/13/BurMacroBlackBg.jpg/250px-BurMacroBlackBg.jpg)

History

!Close-up of a single bract spine of [Arctium minus](//upload.wikimedia.org/wikipedia/commons/thumb/5/59/Arctiumminusbractspine.jpg/250px-Arctiumminusbractspine.jpg)

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