Our extremely tough, handmade collars are Australian made and owned in Queensland.Please choose your size carefully - sizes are a guide, due to the handmade nature some variations may occur.XS 26cm-36cm (16mm wide)Small 30cm-40cm (16mm wide)Medium 36cm-46cm (25mm wide)Large 44cm-54cm (25mm wide)XL 51cm-62cm (25mm wide)Thin lead (16mm wide)Thick lead (25mm or 1 inch wide)