Solvent-Based Ink designed for decorating Non-Porous Surfaces including Glass, Metal, Shrink Plastic, Cellophane, Aluminum Foil, Leather and Acrylic. Does not require re-inking between uses. Low Odor! Archival and Acid Free. Several colors to choose from! Product Dimensions: 3.75" x 2.625" Raised Pad Surface Dimensions: 3" x 2"