X-Ray lead thyroid collar. Free name embroidery. No binding at the top means extra comfort under the chin. Thyroid collars are 6" tall x 6.5" wide x 24" strap and are available in regular weight (RW) 10 oz, light weight (LW) 8 oz and lead-free (NL) 5 oz. Velcro closure is standard. Optional buckle closure available. NOTE: For collars ordered with the optional buckle and free embroidery, the embroidery can be positioned on the bib only.