Black Diamond Cosmo 300 Headlamp Rear Bike Light Weight supplement: pair | manufacturer's

Weight supplement: pair | manufacturer's specs

One-hand operation even with gloves

-High waistband in the back

The composite Helium deck provides the feather-light foundation and features a unique louver design to shed snow more efficiently

Black Diamond Cosmo 300 Headlamp Rear Bike Light Weight supplement: pair | manufacturer'sWith 300 lumens of power housed in a super compact, watertight body, the Cosmo 300 is perfect for urban adventures and overnighters in the woods. The Cosmo's new, compact body, is more ergonomic with a lower profile for improved balance, and the updated user interface includes a second switch for easy lens selection. In addition, the updated optical efficiency not only provides brighter light, but also saves battery life. And thanks to its watertight