Enjoy a day on the beach with this color-changing shirt! While they're playing in the sand, see the blue and white design transform to an array of colors with exposure to 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 T-Shirt change! You'll love this classic tee and worn-in feel will only get softer every time you wear it 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 Sit back, relax, and let your little beach bum enjoy a day on the beach with this color-changing shirt. While they're playing in the sand, see the blue and white design transform to an array of colors with exposure to sunlight. We're sure they’ll be the coolest one on the beach wearing this shirt.