Start your day under the sun on the right foot with these color-changing jelly shoes. Watch as they magically change from Clear to glistening Purple with sunlight Colors adjust back and forth in seconds! Even on a cloudy day, 80% of the sun's UV rays still pass through the clouds, making your Del Sol Sandals change! You will never get bored. Sturdy, yet comfortable ballet slipper style shoes Spectrachrome Crystals reveal hidden colors when exposed to ultraviolet waves. When exposed to sunlight, the crystal has an energy-shift causing the color of the dye to become visible to the human eye Our mission is to create fun, joy, smiles and memories for everyone under the sun. We've been doing so since 1994 with our color-changing clothes & accessories Start your day under the sun on the right foot with these color-changing jelly shoes. Watch as they magically change from clear to glistening purple with sunlight and then return to their original color without sunlight. Del Sol’s proprietary Spectrachrome color-changing technology puts a sun-kissed twist on a popular retro-style shoe that pulls the heart string of anyone who had a favorite pair of jellies as a kid. Sturdy, yet comfortable, ankle-buckle jelly shoes.