Marine grade 316 stainless steel is used for the closure and is guaranteed to never rust or break. The closure and Survival Straps also include a break-away pin. Whether you love the look and feel of paracord or have been looking for a durable and robust Apple Watch band option, our Steel Clasped Nylon Survival Braided Loop, customizable Apple Watch Strap is a good value and is available for all Apple Watches.