All of our buttons are made from 100% recycled steel. They are all laminated to provide durability and general protection from the elements.
Metallic buttons are printed on acetate, a clear film used instead of paper. Acetate allows for the silver shell of the button to shine through where ever there is white in your design. Anything which is white in the design appears silver in the acetate button and colors will appear darker than they do in your digital proof.
Standard buttons are printed on white paper so the colors are crisp and more similar to what you see on your computer screen. The white paper is double sided laminated to be durable and generally protected from the elements.