Design studio Nooka has developed an umbrella called Sa, which uses an origami-inspired design to eliminate the traditional umbrella's canopy wires and replaces them with "a dual canopy that utilizes planar tension," said Liz Stinson at Wired. The result is a "stronger, more resilient" umbrella, with an inner and outer canopy that "expand and contract in unison." The Sa is still in the planning stage; there's a Kickstarter campaign to raise funds for manufacturing, and the company hopes to have umbrellas to sell next spring for $69.
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