Develops Character: Made with supple Horween leather, from the USA, that develops a patina with time and takes on a look totally unique to your case. Modern Design: Each strap is made with true craftsmanship, utilizing best in class materials and state of the art manufacturing techniques to create a strap that is unique Custom Hardware: Each strap is fitted with our custom designed, metal injection molded (MIM) buckle and lugs. High tolerance fit and sharp details are created with this industry leading marine grade 316 stainless steel Compatible: Works with all previous versions of Apple Watch, including Apple Watch series 5