iStrap 20mm Genuine Leather Watch Strap Padded Calfskin Band Steel Spring Bar Buckle Super Soft - Brown &hellip; CALF SKIN LEATHER:Made of genuine calf leahter, semi-gloss. The back side is nubuck, super soft WIDTH AND LENGTH SELECTION:width is 20/18mm, fit watches with 20mm flat lug, comes with a 18mm steel tang buckle,length is 125mm/75mm,when fixed together, the total length range is 135mm to 180mm (5 5/16'' to 7''), plus the watch case diameter, and it's the wrist range the strap will fit SUITABLE THICKNESS:4.5mm at lug end, tapers to 2.5mm at buckle end, light padded, super soft SUITABLE FOR WATCHE:The strap is standard style, can fit most watches, can fit Breitling, Breguet, Cartier, Casio, Citizen, Longines, Nomos, Omega, Tissot and other watches with corresponding flat lug FAST SHIPPING AND ARRIVED ON SCHEDULE: It takes about 2 days to USA .