glassninja
Here is a lighting technology that attaches to your helmet or sportswear to keep you visible in low light conditions. Firefly can be embedded into protection gear, safety wear, kids clothing, and accessories. The Firefly module lets you control illumination levels and patterns.
More items like this: here
The battery lasts up to 4 hours. Firefly light guides and LEDs work in any weather. They are machine washable.
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