Your Personal Sun-Exposure Timekeeper
Smart swimwear with photochromic fabric patterns that create a personalized sun-exposure sundial on your body. The UV-reactive design shifts throughout the day to show both time and cumulative exposure, telling you exactly when to reapply sunscreen or seek shade based on your skin type.
"You look down at your swimsuit mid-afternoon and see the photochromic pattern has migrated to form '3:00 PM' with an orange warning glow at the edges — you instantly realize you've hit your 4-hour sun safety limit and need to reapply sunscreen NOW, all without checking any app or device."