The size of the mouse pad should be selected according to personal needs and usage scenarios. If the desktop space is large and you need to move your arms in a large range, you can choose a larger size; if the desktop space is small or you only need to move the mouse in a small range, you can choose a smaller size. Generally speaking, a medium-sized mouse pad is the most common and practical choice. At the same time, the material of the mouse pad also needs to be considered. For example, optical mice are suitable for soft materials, while laser mice are suitable for hard materials, which can reduce mouse jumping and improve the accuracy and speed of games and work.