Each leather strap is handcrafted from Horween Leather. Horween, the oldest leathermaker in the US, began in 1905 and prides itself on using the highest quality materials and processes to produce leather. Each strap is individually handmade in the USA by expert leather craftsmen. Since each one is handcrafted, each strap has its own unique characteristics from the tanning process and handmade nature of the product. The strap is designed for comfort and is made specially to fit the Field Watch with 20mm lug size and an 18mm 316 stainless steel buckle.