An Optional velcro strap in black or gray was available – these straps attached to the main male backlink with the bracelet. Thankfully, the fabric strap within the IW3715-36 plus the alternate rubber strap from the IW3548 suit the Aquatimer! Together with the highly corrosion-resistant 904L chrome steel (labeled as https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/