This is a Sticky Holsters Pocket Holster known as the Pocket, model MD-5.
Their holsters are the most versatile" comfortable and convenient on the market. The holster uses a high friction synthetic rubber to stay in place. These can be worn in the waistband or in a pocket or on the ankle. Also available in modified versions that fit most lights and lasers.
Features:
Ambidextrous
American Made
Latex and allergen free
Multi-Use and Multi-Fit
Part of a modular system
