SIRU stud earrings shape is simple and graphic. Color black and birch. The height 21 mm (0,8 inches) and the width 15 mm (0,6 inches) at widest.
The material of the earrings is 2 mm thick Finnish birch plywood. Plywood is manufactured in Lohja. The earrings are designed, cut to form, painted and then assembled in Kuopio. The earrings studs are made of nickel free silver-plated metal.