A matching travel tag is included that has a unique code so that both can be tracked. That way you can send the tag traveling and keep the beautiful coin in your collection. The tag also includes a chain for hitchhiking. They are trackable at Geocaching.com with a unique GIFF icon.
Dimensions: The geocoin is approximately 2.25 inches x 2 inches. The trackable tag is approximately 1.5 inches by 1.75 inches.