The harness has A 3-strap method Each individual with a particular purpose. The Dynamic Bungee Strap provides flexibility for movement and breathing without the need of compromising the draw. The Static Buckle Strap can make for easy on/off when providing an anchor point to draw the pistol in opposition https://www.primmaryarmshop.com/product-tag/fn-510-accessories/?per_page=9&layout=list