bicycle visibility lights

Backpack Bike Lights: Flashbak Review and Modern Alternatives (2009-2026)

We tested the Flashbak backpack bike light through November 2009's weather chaos. The product is long gone, discontinued around 2012-2013, but the concept behind it matters more in 2026 than it did then. Here's what worked, what failed, and which modern alternatives solve the same visibility problem better.