I Heart Guts Thyroid Gland Lapel Pin - Feelin' Hormonal Show off your metabolic pride with this fabulous little thyroid pin. Pin this thyroid to your jacket and make onlookers burn with desire. Learn thyroid facts on the back of our cardboard display. Cute 1.25 printed aluminum pin made in China. I Heart Guts puts a smile on your face and smarts in your brain.