ThinkPad laptops are tested against 12 military-grade requirements and pass more than 200 durability tests. Additionally, the ports and 360-degree hinges are reinforced with rubber bumpers to protect against damage to corners. The keyboard is water-resistant and houses mechanically-anchored keys to prevent restless little fingers from prying them off. The Corning® Gorilla® Glass display is both impact - and scratch-resistant. Should an accident occur, this tough device is built to withstand bumps and drops from up to 3 feet / 90 cm—about the height of a school desk.