Thanks to a tiny device that clips onto a shoelace, runners can finally measure how wind affects their runs.

Whether you’re battling a strong headwind or benefiting from a steady breeze at your back, there’s no doubt that the wind impacts your performance as a runner.

But factoring this invisible force of nature into your pacing has historically involved a lot of guesswork, because no wearable device for runners has been able to measure wind in real time—until now.

This past summer, Boulder, Colorado-based company Stryd introduced a new version of its popular power meter. The wearable now incorporates groundbreaking wind-capturing technology and offers data insights that help you pace yourself even in the gustiest conditions…

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