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These will be your favorite and last pair of sunglasses you own. Little Blue Number’s design and color are fashion-forward, changing from blue and silver to gold with sun exposure. Step outside wearing these lightweight shades and wow everyone with the color-changing frames. These SPECTRA™ and Polarized Pro™ sunglasses not only shield the sun’s harmful rays, providing 100% UVA/UVB protection, but also provides brighter views and provide high-contrast viewing. Don’t worry if they get damaged or lost by accident or theft. Our Lifetime Replacement Guarantee always has you covered.
Much like a flower that blooms when exposed to sunlight, Del Sol's products change colors in the sun using their proprietary Spectrachrome® technology.
Spectrachrome® molecules in the products shift to colors visible to the human eye when exposed to UV sunlight.
Del Sol's Spectrachrome® formula for color change was developed from a concept originally researched by NASA for use in space.