-Earring hooks are hypoallergenic stainless steel. Comes with a rubber backing
-Charms are made out of heavy duty plastic (NOT shrink plastic). Waterproof and very durable. They have a glossy sheen to them and are scratch resistant. The image is printed on the front. The back is white.
-Marty McFly- 1 3/4 by 11/2
Logo- 1" by 1 3/4"