Add or remove your calls using the by simply attaching new loops to the lanyard. DIY Lanyards are braided with heavy-duty nylon paracord for a lifetime of hunting. Each lanyard comes standard with two paracord sliding loops braided into it. This "do-it-yourself" kit includes two single loop attachments; one double loop attachment and one whistle attachment with stainless steel snap hook connectors so you can attach them exactly where you want them and only when you need them.