Clear polymer stamp which measures 85 x 52mm or 3 1/4" x 2" (H x W) approx. For use with acrylic blocks - recommended size: medium (4" x 3"). These stamps are made of transparent polymer with a cling that's built-in - no glues, foams or adhesives required! Skateboard Timmy! by Wendy McGlinchey Please click image to enlarge/go to Wendy's blog