You're already a member, right? Of course you are! Now, you can proudly tell the World that your life is one big ADVENTURE! This is a design created by Cheyenne Wright, the artist who does the lovely colors for the Girl Genius comic. Brass-tone metal, sea-blue enamel inset. Diameter= 1.75" (That's 44.45mm) Two "butterfly" or "military" clasp pins on back.