An Optional velcro strap in black or gray was available – these straps hooked up to the very first male link in the bracelet. Fortunately, the fabric strap from the IW3715-36 plus the alternate rubber strap in the IW3548 in good shape the Aquatimer! To rejoice the Submariner’s 50th anniversary https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/