Del Sol St Thomas USVI Always Summer Color Changing Black Tshirt Mens XL

Approximately 22” pit to pit and 30” long 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 tee and it 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