Wurkkos HD15 Bike cap

The flashlight cap cuts off the light so you don't dazzle.  It does not reduce the range of the flashlight, but only cuts off the top half of the light beam, like the lights in a car.

In the pictures you can see how it works. The first was made with a hat, the second without.

I prefer to secure the cap with a zip tie and stick aluminum foil on the top of the.

HD15 bike holder is in my channel.