Headquartered in Klagenfurt, Austria, Hirsch was established in 1765 as a leather workshop and tannery. It remains a family-owned business to this day, and continues to gain recognition for excellence and innovation in watch strap design. The robust Hirsch Boston strap is constructed from high quality, full grain English leather made from genuine buffalo calfskin that has been semi-aniline dyed and vegetable tanned. Hirsch's proprietary Softglove lining leather is hypoallergenic and gentle on the skin. The Boston is a cinch to clean: simply run under lukewarm water and dry with a cotton cloth. All of our Hirsch straps are integrated with handy quick-release spring bars. Prefer standard spring bars? Quick-release bars are easy to remove: simply slide the lever as far as you can to the left, then gently bend back the strap corner until the bar emerges from the slot. Material: Genuine buffalo calfskin leather. Hirsch Softglove lining leather. Fitted with a Hirsch-branded polished stainless steel buckle. Sizing: Available in 18mm, 20mm, 22mm and 24mm. 4.5mm thick at lug end, tapering to 3mm at opposite end. Regular piece length 120mm / 80mm excluding buckle; total length 7-7/8" (200mm) excluding buckle. Short piece length 110mm / 70mm excluding buckle; total length 7-1/8" (180mm) excluding buckle. Puzzled by the size labeling on your Hirsch strap or packaging? Hirsch refers to mens' strap lengths as follows: Short is "M;" Regular is "L." Includes: Integrated with stainless steel quick-release spring bars.