Each Ferret Tracks Pendant comes with a free 18" sterling silver chain. In addition, there is free engraving for one name on the back of the pendant. You would have to send me an email with the name you'd like engraved . . . info@puppypaws.com Comes w/an 18" sterling silver necklace. The pendant is approximately 1/8"thick x 1/2w" x 3/4"h.