The Ultra FLEX Strike is all about super light weight and flexible protection for your strike dog.  The Ultra Flex Strike Vest consists of a layer of 3000D Coated Military Grade Kevlar sandwiched between two layers of 1000D with a Dragon Weave Chest piece.  There is NO felt in this vest.  It comes with Oversized Quick Snap D-ring on the collar prong holes for your TT-15 and TT-15 Mini units.  Standard Ultra Flex Strike Vests come in Urban Viper pattern.