During the design process, we analyzed 8 different curvatures of the neckband by recording runners running in super slow motion. We then reviewed the recording to see how the device bounced around the neck and isolated the ideal design that had the least amount of movement during running. Vi also comes with a range of in-ear fins, that stabilize and hold the earbuds in place, and a range of ear gel sizes to ensure a custom fit that’s comfortable for extended wear.
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