Set of 4 Carioca Whiteboard Markers Oops is an erasable pen with thermosensitive ink. Ergonomic triangular non-slip grip that helps improve writing. < li>Elastic included on the back of the pen and on the cap. Erasable ink pen. Smooth and fluid writing. Erases perfectly on paper. It is recommended not to use erasable pens on legal documents. Refillable erasable pen. The replacement is compatible with most models from other brands and manufacturers. Also recommended for sewing and crafts. Average stroke width 0.7mm. Includes 12 pens. Brand: Carioca