
Everyone selling you bike lights is lying about lumens. Here is what actually matters, how many you really need, and which lights will keep you alive without emptying your wallet.

If you walk into a bike shop today, you’ll see helmets ranging from $20 to $300. The $300 one looks like a spaceship and claims to be aerodynamic enough to save you 40 seconds over 25 miles. The $20 one looks like a styrofoam cooler with straps. Here’s the dirty little secret the industry doesn’t…
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