Design and features Source: Lenovo When Lenovo announced the ThinkPad X1 Nano in late 2020, many people compared it to the X1 Carbon. These two laptops come from the same family, though the X1 Nano is sized at 13 inches compared to X1 Carbon's 14 inches. The Nano is about a half-pound lighter than the X1 Carbon at just 1.99 pounds (907g), and also shaves about an inch off the width. The Nano is actually a bit thicker than the X1 Carbon at the chunky side of its wedge shape. Both laptops employ a durable carbon fiber top and magnesium alloy bottom, and both have the standard ThinkPad black finish.