The Invisible Undershirt by Sloane Men is quite possibly the world's perfect undershirt. By matching the color of the undershirt to your skin, the undershirt becomes nearly invisible under your outer shirt. Made of a premium fabric blend of 95% Siro Micro Modal and 5% Spandex, the Invisible Undershirt is extremely soft, breathable, and lightweight. It has excellent moisture absorbing qualities and offers minimal pilling, shrinkage, and color fading. The spandex adds a stretchy quality to our shirts, without compression, allowing you comfortable freedom of movement all day without the shirt bunching or coming untucked.