You are fully suited up and are ready to put your fins on to start your dive and your fin strap or buckle breaks! Always have a spare in your save-a-dive kit. Basic fin strap and buckle is designed for Aeris fins yet, will fit a large scope of strapped fins. Fin strap has durable impact resistant plastic squeeze" style quick disconnect release for easy donning or removal of fin. This simple easy grip rubber strap with buckle could save a dive!