For pedestrian safety on the streets after dark, these flashing yellow LED markers from Nite Ize let drivers and other pedestrians see you coming and going. They feature four bright push-button LEDs that can be set to glow or flash modes. Strong magnetic closures make them easy to attach to clothing, hats, shoes, and backpacks. They’re powered by 2032 lithium batteries which offer 70-hours of continuous run-time.