Each stitch was carefully and meticulously done with embroidery thread. It's very lightweight, 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? <Light Blue Bird Size> Height: Approximately 4.8cm, Width: Approximately 5.2cm <Red and Blue Bird Size> Height: Approximately 5.0cm, Width: Approximately 2.0cm <Speckled Flower Size> Height: Approximately 4.6cm, Width: Approximately 4.0cm <Pale Square Size> Height: Approximately 4.8cm, Width: Approximately 5.0cm