Real Crystals with Real black leather Department store quality Width of the collar is 0.85" or 22 mm Length measurement S : From Start of leather to middle hole is 10", from middle hole to tip is 3.5" more, total 13.5" M: From Start of leather to middle hole is 12", from middle hole to tip is 3.5" more, total 15.5" L: From Start of leather to middle hole is 14", from middle hole to tip is 3.5" more, total 17.5" Best is to compare with a collar you are currently using to find the best size to fit. Average weight of the collar is 3--5 oz.