R207 "PERFORMANCE"- Genuine Buffalo Leather watch strap with the exterior stitching cream white and the interior 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. R207 "PERFORMANCE" watch straps are available from 20 to 24mm, in black, dark brown. Thickness of strap: (approx) 7.5 mm to 4.5 mm. Cross Section: round. Select the size and colour that best suits your needs. Lug/Buckle Measurements: 20/20mm, 22/20mm, 24/20mm.