Brooks Running LED Reflective Hat in NightLife Neon Yellow. The Nightlife reflective hat has the capability to have a continuous or blinking mode setting. It is updated with even more retro-reflectivity, a perforated bill and a flat LED light to keep you visible in any situation. Its removable battery pack -- which uses one CR2032 Lithium 3V battery -- makes it easy to replace batteries and wash your hat.
To change the battery in the NightLife hat, or remove it for washing: