Available in either diamond or square shape. Diamond buttons available in small (1.6cm wide and 1.9cm long), medium (1.9cm wide and 2.2cm long) or large (2.2cm wide and 2.6cm long) The biggest seller is the medium which are used for the highland dancers' vests. Square buttons available in medium (1.5cm by 1.5cm) and large (2cm by 2cm). The medium diamond buttons are also available in gold for an additional $2.50.