My Thumbnails were primarily designed to be carried on a keyring as an immediately available self defense blade. On a key ring they are small enough in their kydex sheath to disappear completley until you need them. Toss your keys on the table in front of anyone and not a single person will ever see the Thumbnail unless you deploy it.

The blade is readily accessible while you are sitting in your car with the keys in the ignition. The Thumbnail hangs right in front of you on your keys. You can walk anywhere carry just about anything with the Thumbnail on your finger and it just looks like you are carrying your keys.

Do not let the Thumbnail's small footprint fool you - this will cut immediately and deeply. This is a serious ready to deploy self defense weapon.