Hand Wash Only Designed using an antique set of collar jewels, these hatbands are an honor to our fraternity. Each Jewel is 1 inch tall and 1 3/4 long, with additional rings and lobster claw clasps to make the band fit all sizes and types of hats. The band should be secured to your hat with white thread, fishing line, or a small amount of glue at several places around the hat.