Penn-Jersey X-Ray standard thyroid collars with Velcro closure. Optional buckle closure available in place of Velcro closure. Choose from a variety of colors, fabrics and prints. All of our thyroid collars are rated at .5mm lead equivalent protection. Collars are 6" tall x 6.5" wide with a 24" strap and are available in (RW) regular weight 10 oz, (LW) light weight 8 oz and (NL) lead-free 5 oz. NOTE: For collars ordered with the optional buckle and free embroidery, the embroidery can be positioned on the bib only.