Adorable blood drop lapel pin looks bloody cute on you! Blood is a liquid that flows inside every inch of your body through a network of tubes called your circulatory system. Your blood carries fuel, food and messages inside your body. It also provides defense and removes waste. Your blood visits every single cell, making deliveries and taking out the trash. Your circulatory system is powered by a powerful pump -- your heart! Soft enamel zinc alloy pin measures 1.25" tall