The full-sized, backlit keyboard is spill-resistant and the keys retract automatically when not being used as a laptop, so they are not exposed when the keyboard is face-down on a desk or table. Plus, the  Yoga is tested against military specifications and made to endure extremes. Yet for all its durability, it weighs just 2.8 lbs / 1.27 kg. Like the rest of the X1 family, this convertible Ultrabook™ is thin, light, and tough.