UV Ray Detecto Ring
Product Review (submitted on January 3, 2018):
Those beads were fun and surprising. I was so surprised to see that in the full shade of a building how much sun there is. I thought shade protected you. I was also surprised and pleased that the gloves I use to work outside and drive the tractor didn’t let the sun through; the beads stayed white when I put them under them and drove the tractor all day.