Free Sundiwear Stickers

These free Sundiwear stickers are pretty darn cool. You wear them outside and then they turn red after a certain amount of sunlight has hit them, thus letting you know it’s probably time to seek out shade or sunscreen. Too bad these things weren’t around when I was kid as I have a feeling they’re a bit more helpful than the method I always used. I’d spend a day outside playing with my friends and then wake up the next morning and go “huh, I got sunburned!”