Each stitch was carefully and meticulously done with embroidery thread. It's very light, but to avoid putting stress on what you attach it to, we recommend adding a layer of fabric to the back. Decorate your clothes, bags, scarves, etc., and go out with a smile! ♫ How about using them as markers for your children's belongings? ＜Bus Size＞ Height: approx. 3.8cm Width: approx. 5.7cm ＜Wavy Size＞ Height: approx. 1.8cm Width: approx. 5.0cm