Panasonic Toughbook CF-532JCZYCM 14" Laptop
If you're looking for solid durability without giving up too much portability, then this is a great option which is rather small but easy to take wherever you need to go. The specs on this model are pretty good thanks to an Intel i5 processor and 4GB of RAM which you can upgrade to 8GB if you need more memory. A 500GB hard drive is included with this laptop and there's options for a 128GB, 256GB, or 512GB solid state drive if you need additional storage and want the reliability of an SSD.
This system only comes with a 14-inch display which is rather small but also makes this one a bit lighter and slimmer than other rugged laptops and the screen has optional touch-sensitivity. With a standard battery, this model weighs less than six pounds which is very good for a rugged system, although if you choose a touchscreen then it weighs quite a bit more. Panasonic covers this pick with a three-year manufacturer's warranty.