Experience a spectacular burst of colors with Poly-Craft's UV Solar Reactive Embroidery Threads! As soon as these innovative threads hit sunlight, they undergo a breathtaking transformation, unleashing a rainbow of vibrant hues, while reverting to their original shade indoors. Crafted with durability in mind, these threads promise long-lasting color changes, even after countless washes. Whether you're jazzing up clothing, quilts, or home decor, these threads breathe life into every project, offering top-notch performance for both machine and hand embroidery. With Poly-Craft's UV threads, your artistry isn't just a project – it's an ever-evolving spectacle, a vivid dance of colors under the sun! Unleash your creativity and watch your masterpieces come alive in the radiant sunbeam!