Chameleon UV Color Change Shoelaces by Heebie Jeebies change colors when exposed to daylight. It’s not magic, it’s science! Even on a cloudy day, the UV light activates the photochromic ink on the laces and they change color, revealing butterflies that change from white to pink. Go indoors and they turn white again.

• Photochromic ink changes color in daylight
• Works even on cloudy days
• UV radiation reveals pink butterflies
• 1 pair of 40″ shoelaces