ShapeShift 4.0™ Left-Handed Inside-the-Pant Holster (AG-SSIW-0759-LH-XXX) by Alien Gear Holsters®. Ordinary concealed carry holsters are uncomfortable. Leather-based inside the waistband (IWB) holsters take time to break in, then over time they break down. The all-new ShapeShift™ IWB Holster is designed with a premium blend of cutting-edge composite materials that will provide you with the highest level of concealed comfort. This revolutionary IWB holster is fully compatible with their entire ShapeShift™ system, allowing you to effortlessly shift from one carry method to the next using interchangeable parts. Go from classic IWB to appendix, or transfer the holster shell into an OWB slide in seconds.