iPad Air 2 Screen Protector
If you don't want a case, but still need some protection a glass iPad Air 2 screen protector is an option. If you are unlucky and drop your iPad Air 2 the protector may shatter, but there is a good chance it will keep your iPad Air 2 screen safe from damage.
See how this type of screen protector protects on a large smartphone in the video above.
$49.99 at ZAGG