For some applications, you just can't get a big enough tablet. For those occasions, Toshiba was showing a prototype of a 13-inch tablet; the company also had a 7.7-inch tablet in prototype not shown here. Because the 13-inch tablet was sitting in its protective case, we couldn't get a feel for it, but it seems as thin its smaller cousins. That said, we can't imagine holding it in one hand for long. We're guessing the weight is about 3 pounds.