Comparison table of mouse pad sizes:

Small sizes are generally 20cm x 30cm or less, medium sizes are generally around 25cm x 35cm, and medium-sized and above pads are basically 30-40cm in vertical dimensions, and 40-50cm in horizontal dimensions are extra-large;

A small table mat is 60-70cm in horizontal dimensions, which can support a short keyboard (less than 80% of the size) or a notebook and mouse; a table mat is 90cm or even more than 1 meter in horizontal dimensions, which can support a standard 104 keyboard and mouse.