Product Details Collar: O-neckSeason: WinterDecoration: beadingThickness: StandardPercentage of material: 95% aboveMaterial composition: Acrylic Sizes can vary from 2-3 centimeters because they are measured by hand. 1inch=2.54cm. The size matched on a label can differ from the one you have ordered Please allow slight color differences due to different light settings on each computer screen.