Razer Goliathus Extended SPEED Soft Gaming Mouse Mat Low sense, high sense, laser, optical or dual sensor system -whatever your sensitivity setting or preferred gaming mouse, the Razer Goliathus offers total tracking responsiveness for consistently reliable in-game control. Yours could be a tiny corner on a desk overflowing with stuff, a vast expansive space, or youre always on the move. Whatever your play-style and space needs, the Razer Goliathus comes in four different sizes to accommodate them all. The weave also provides a nice, comfortable feel under your hand minimizing fatigue over extended periods of play.