R42 "BOLIVIA"- Embossed Teju Lizard Grain on Genuine Cow Leather strap has no stitching. 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 12 to 20mm, in black, dark brown, tan, red & blue. Thickness of strap: (aprox) 2.5 mm to 2.5 mm. Cross Section: light round. Select the size and colour that best suits your needs. Lug/Buckle Measurements: 12/10 mm, 14/12 mm, 16/14mm, 18/16mm, 20/18mm.