I’ve long been a fan of Urban Armor Gear (UAG). They have great cases and it’s the company I recommend for rugged cases. They’re launching a slim, rugged case for the 2018 13-inch MacBook Air. It has an armor shell and impact resistant soft core, dual lock secure screen closure, cooling vents for air flow, tactile grip, easy to access ports, and it meets military drop standards (MIL STD 810G 516.6). It’s compatible with only the MacBook Air 13-inch (2018) Model Number: A1932, and not with the MacBook Air 13-inch (2010-2017) Model Numbers: A1369 & A1466. You can pick one up for US$79.95, with free shipping and a one year warranty.
Check It Out: Urban Armor Gear Launches a 2018 MacBook Air Case