A mouse pad (sometimes mouse pad, mouse mat, or mouse mat), is a surface for enhancing the usability of a computer mouse.------------The three most important benefits of the introduction of the mouse pad were higher speed, more precision, and comfort for the user. A secondary benefit was keeping the desk or table surface from being scratched and worn by continuous hand and mouse rubbing motion. Another benefit was reduction of the collection of debris under the mouse, which resulted in reduced jitter of the pointer on the display. When optical mice, which use image sensors to detect movement, were first introduced into the market, they required special mouse pads with optical patterns printed on them. Modern optical mice can function to an acceptable degree of accuracy on plain paper and other surfaces. However, some optical mouse users may prefer a mousepad for comfort, speed and accuracy, and to prevent wear to the desk or table surface.-----------------------Originally, mouse pads were available in a simple rectangular shape. In recent years, though, they have been available in many shapes and designs. Ergonomic designs are available with built-in wrist rests made of silicone gel, foamed and beaded materials. Companies often give away mouse pads for promotional reasons, and computer manufacturers often include a mouse pad with their logo on it, usually with technical support information. Many artists have published work on mouse pads.