Size is not the point, how is the key! 
Razer mouse pad, whether it is a large work desk, coffee shop or a small corner will help you find a foothold! 
Size: L * W * H
250 * 200 * 2 mm 
300 * 250 * 3 mm
440 * 350 * 4 mm
900 * 400 * 3 mm