BISONSTRAP Retro Leather Watch Straps This watch band has a tapered width and is thinner at the buckle than the lug end as follows: 14mm watch strap with 12mm buckle; 16mm watch strap with 14mm buckle; 18mm watch strap with 16mm buckle; 19mm, 20mm, 21mm watch strap with 18mm buckle; 22mm, 23mm watch strap with 20mm buckle; 24mm watch strap with 22mm buckle. Features 1.Watch bands adopt padded technology. Total thickness is approximately 5mm to 3mm 2. Polished stainless steel buckle 3.Watch straps are equipped with quick release spring bars,very easy to install 4.The strap will be a little stiff at first, but it will become softer and more comfortable after a few days of wearing How to Choose the Right Size It is important for you to choose the right size. Only your watch lug width is exact width of the band, can spring bars will fit correctly. SIZE = Band Width = Watch Lug Width There are some ways to help you know your band width 1.Use a ruler to measure the distance between the watch lugs in millimeters. 2.Check the backside of your current band to see if the width is marked. 3.Find the specification of your watch/model by searching online. FITS TRADITIONAL OR SMART WATCH LUG WIDTHS Traditional watch: Most traditional watches with 18mm 20mm 22mm standard watch lug width ( Not for special design watch lug)Smart Watch: --18mm: Asus Zenwatch 2 1.45", Fossil Q Venture / Scarlette / Tailor, Huawei Watch / Fit, LG Watch Style, Withings (Nokia) Activité Pop / Activité Steel / Activité Sapphire / Steel HR 36mm --20mm: Fossil Q Gazer, Huawei Watch 2, Moto 360 2nd Gen Men's 42mm, Pebble Time Round Large, Samsung Galaxy Watch (42mm), Samsung Galaxy Watch Active, Samsung Gear S2 Classic / Sport, Ticwatch 2 / E (Express) / Active / Classic, Withings (Nokia) Steel HR & Steel HR Sport 40mm, Hamilton Khaki 38mm, Amazfit Bip --22mm: Asus Zenwatch 2 1.63", Fossil Q Founder 2.0 / Marshal / Wander / Crewmaster / Explorist / Commuter / Grant, Huawei Watch 2 Classic, LG Watch / Urbane / R, Moto 360 2nd Gen 46mm, Pebble Classic / Time / Time Steel / 2 / 2 SE, Samsung Galaxy Watch (46mm), Samsung Gear S3 Classic / Frontier, Amazfit Pace, Stratos; Vector Luna, Meridian Vintage Leather Soft Silicone Horween Leather Crazy Horse Leather Sport Style Size 14mm - 24mm 18mm, 20mm, 22mm, 24mm 18mm -24mm 18mm - 22mm 18mm, 20mm, 22mm, 24mm Color Black, Brown 12 colors Black, Brown Black, Brown, Red 8 colors Quick Release ✓ ✓ ✓