We called up Ham Edc and said we need something to help protect senative skin and scars from the hard edge of kydex. So after a few months of trying different material and getting the dimensions dialed in so they can be ambidextrious we came up with our exclusive comfort backsers. We made them in 2 sizes to cover the length of most of the guns that are used for every day carry. They are made from neoprene and are mounted to any holster with velcro dots (included). When you get yours just wipe your holster down with the supplied alchohal wipes to provide a clean surface for the velcro dots to adhere to, then position your Comfort Backer excatly where you want it.