Designed to fit the Dell Latitude 5440 | 3440 Laptop, these protective covers wrap tightly around every key and the entire keyboard to protect it against liquids, dust and more. The thin layer of polyurethane delivers a great typing experience for students, dentists, or medical practitioner. Schools can allow multiple students to safely use the same keyboards in computer labs, libraries and other shared spaces, knowing they can easily disinfect them after each use. The seal protects against damage from sanitizing wipes or liquid. Top Grade Covers for Keyboards & Laptops, Made in USA since 1989. Rated by customers as best available quality in the market. Custom fit manufacturing for Covers that fit like a glove. Over 4000 models available. Suitable for Medical, Industrial, Educational and Military applications.