DeSantis Gunhide 137, Slim-Tuk, Inside the Pants Holster, Fits FN 509 4-4.5, Ambidextrous, Black Kydex 137KJ5PZ0 Gene DeSantis hand built the first DeSantis GunHide holster at his kitchen table over 40 years ago. A lot has changed since then: DeSantis has grown into a global enterprise