That's one big mouse pad
It's not just the size that makes the Soft Trading Steelpad 5L Gaming Mouse Pad different, check out the official description:

A unique mouse pad featuring the durability and stability of a hard plastic, as well as the softness and smoothness of a cloth mouse pad. The SteelPad 5L is composed of five different layers, each layer contributing to the overall precision and feel of the pad. The surface of the SteelPad 5L is highly durable and offers consistent and precise mouse control.

A mouse pad that is strong like hard plastic but feels like cloth. Genius!  ¶ 4:50 AM