Fireflys Valve-Cap LED Wheel Lights — Bike 2-Pack (4 bulbs)

Screw-on valve-cap LEDs that pop on when your wheels spin—instant color rings for night rides and extra side visibility. Each light installs in seconds on standard Schrader valves (cars/most bikes/e-bikes). Great for parades, cruises, and kids’ bikes.

What you get

• 4 lights (enough for two bikes)

• Preinstalled button-cell batteries inside each light (pull the plastic tab before first use)

• Screw-on design with internal motion sensor (lights when rolling; off when stopped)

• Weather-resistant housings

Specs & fit

• Valve type: Schrader (use a Presta adapter if needed; not included)

• Color: multi-color flashing

• Install: remove valve cap → screw on light → pull battery tab → ride