To provide a seal capable of being easily and accurately bonded to a desired position, capable of being bonded without touching with a pressure- sensitive adhesive surface at the time of bonding and making the bonded seal easy to attract attention by forming the seal into a three-dimensional shape.

The seal is equipped with a seal main body having a pressure- sensitive adhesive layer on one surface thereof and a pattern on the other surface thereof and a protective sheet covering the pressure-sensitive adhesive layer and made easy to peel. The seal main body has at least three folding lines in odd numbers so that hill form folding lines and trough form folding lines are alternately arranged and the outermost folding line is the hill form folding line and the shapes of pieces adjacent to each other through the hill form folding line are made symmetric. Further, the protective sheet covering the adhesive layer of the outermost piece is made separable from the protective sheet covering the adhesive layer of the other piece.