R45 "FRENCH"- Genuine Cowhide strap with the stitching matching the colour of the strap. When you purchase a RIOS1931 watch strap you are acquiring a high quality craft product. The combination of traditional , handcrafted perfection while constantly evolving has made the watch straps of RIOS1931 a unique, top quality product. These straps are available from 14 to 22mm, in white, black, tan, red, blue & orange. Thickness of strap: (aprox) 3.0 mm to 2.7 mm. Cross Section: square. Select the size and colour that best suits your needs. Lug/Buckle Measurements: 14/12 mm, 16/14 mm, 18/16mm, 19/14mm, 20/18mm, 22/18mm.