R188 "DERBY"- Genuine Vintage Leather watch 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. R188 "DERBY" watch straps are available from 22 and 24mm, in black, brown, dark brown, tan, grey. Thickness of strap: (approx) 6.0 mm to 3.0 mm. Cross Section: round. Select the size and colour that best suits your needs. Lug/Buckle Measurements: 22/22mm, 24/22mm.