This Armatus Carry Architect sheath for the Benchmade Puukko 200 is a top-quality Kydex sheath with many mounting options. It's a snug fit, so you can be sure that the knife will stay in place. Even when you go out running. Nevertheless, it's also easy to remove the knife from the sheath by placing your thumb against the raised lip at the top of the sheath. This little feature shows that Armatus really knows what it's doing when it comes to Kydex.