

Sipping, swigging, or even slurping under the sun never felt so refreshingly cool and fun than with our new color-changing 40 oz Tumblers!
Not only is this stainless-steel bottle designed to keep your liquids cold or warm, but it’s also engineered with Del Sol’s innovative Spectrachrome® technology that changes the bottle’s color according to the intensity of the sun’s UV rays.
The more intense the color changes on the bottle, the higher the intensity of the sun’s UV rays. When you’re outside having fun in the sun, simply refer to the strength of the color-change on your Del Sol bottle to then take action against too much sun exposure. Like two bottles in one! One color inside, another color outside!
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.