With the heat of the summer upon us, walks with the dog are either early or late in the day, to avoid the sweltering heat (above 100 degrees with the heat index). This cap is lightweight & breathable. It reflects well and alerts drivers of our presence. It has good 360 degree horizontal reflectivity which is why I chose this specific cap. Now, I don’t have to be invisible because I left my illumiNITE jacket at home! (To improve visibility, I have paired it with the illumiNITE bandanna.) The underside of the bill is black which helps to reduce glare or reflection (nice touch)! Overall, I am very pleased with my new cap!!