The TechZone reviews the SteelPad 5L Professional Gaming Mouse Pad

Other standard mouse pads may only be about 8 x 6 inches. The SteelPad 5L, by contrast, is nearly four times this size with overall dimensions of 380 x 280mm (15 x 11 inches). You could very easily cut this mousepad in half and have two very decently-sized, very usable pads. The rationale behind having such giant dimensions is that you will never need to lift your mouse off of the pad. You can span the entire width of your display with no trouble at all. Whether being so large is an advantage or disadvantage is largely (no
pun intended) a matter of personal preference. Speaking for myself, desk
real estate is at a premium, so there's no real reason for me to have a
mousepad quite this huge.

SteelPad 5L Professional Gaming Mouse Pad Review