sterling silver italian 2.5mm solid franco square box link -made in italy (silver, 16) pori jewelers add a touch of endless refinement and fashion with this sterling silver italian 2.5mm solid franco square box link 925 yellow gold plated chain necklace. its design is stinking and shiny with a high polished finish. unisex look can be worn by man or women. perfect for a night out or any occasion. thickness is 2.5 mm thick please see size chart and model images for sizing on your neck 16 inch is shortest length . 16 inch lays shortest on the neck please see size chart for a sizing idea and choosing a desired length / size.