Explorer ll (Pre-2011) - 16550,16570

20mm Curved Ended Rubber Straps for Rolex Explorer II

The 20mm lug width is the most common on the Explorer II, covering most references from the 1970s through to the mid-2000s. These straps are curved ended, meaning the top of the strap follows the case shape instead of sitting flat against it. The fit is cleaner, the gap between case and strap disappears, and the watch sits better on the wrist. Available in over a dozen colors — from straight black to Marbella Blue, Grey Camo, Digi Camo, Red Wine and Bordeaux. All priced at €76.50 with the current 10% discount.

Standard Rubber vs FKM Vulcanized – Which 20mm Strap Fits Your Wear Style?

Standard rubber covers most use cases. It's flexible, comes in every color in the range, and at €76.50 it makes sense if you rotate between straps or want options for different occasions. FKM Vulcanized starts at €140 and the difference shows up over time rather than immediately. The material is denser, resists UV yellowing, and doesn't compress as much under heat or pressure. If the Explorer II is your daily watch and the strap rarely comes off, FKM holds its shape and finish noticeably longer. If you swap straps weekly, standard rubber is the smarter buy.