R102 "TOSCANA"- Genuine Calfskin Leather 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. R102 "TOSCANA" watch straps are available from 12 to 22mm, in black, dark brown, tan, red, pink, blue. Thickness of strap: (approx) 3.5 mm to 3.0 mm. Cross Section: square. Select the size and colour that best suits your needs. Lug/Buckle Measurements: 12/10mm, 14/12mm, 16/14mm, 18/16mm, 19/16mm, 20/18mm, 22/20mm.