When you first set eyes on the Logitech Cube Mouse, you'll immediately think one of two things:

"That's not a cube."
"What is that tiny thing?"

At just about an inch wide, two inches long and half an inch thick, the mouse looks and feels more like a chubby pencil eraser than a device to control a cursor on screen. Sit one next to one of the company's wireless travel mice — which are themselves pretty small — and it's still utterly dwarfed by the larger peripheral. It fits into any pocket with ease, including the key pocket in a pair of jeans. And, at 25 grams (less than an ounce) it's light enough that you can comfortably hang it by its Micro USB charging cable while you top off the internal battery. Is it a good mouse, though? Read on.