Marathon's vulcanized rubber straps look and feel great. They work well with larger watches and you'll appreciate their durability and style. This high quality strap is waterproof and looks great with both dressed up and casual attire. It features a 316L stainless steel signed buckle and installed stainless steel shoulderless 22mm spring bars. NOTE: The rubber strap includes a shoulderless spring bar that is compatible with watches that have drilled lugs from the outside. If your watch does not have drilled through lugs, then replace the spring bars in the strap ends with shouldered spring bars, so they can be easily removed from lugs that are not drilled through.