The Spot 'n Line Pen is a raised line tactile marker designed for use by individuals who are blind or have low vision. The "pen" is a tube of non-toxic liquid that can be squeezed out to form three-dimensional raised lines, dots, and other shapes on a variety of surfaces. These tactile shapes can be felt once the liquid is thoroughly dry. The marker can be used for maps, item identification, and tactile drawings. The tube holds one fluid ounce. COLOR: White, orange, or black.