Size: 6 * 10 cm Made of high quality Kraft paper, is safe, non-toxic, odorless and has good air permeability and tear resistance. The surface of the envelope bag is smooth and flat, and you can write, paint or paste stickers on it. High quality seed bags, kraft paper bags have a certain water resistance, can isolate the humidity, keep the seeds dry, the bag has good air permeability and can ensure the seed activity. It is suitable for storing various small items such as seeds, nuts, candy, buttons, beads, stamps, customs photos, etc. You can write a name on the surface of each envelope to avoid confusion. A total of 100 envelopes is enough to meet your different needs, making them a great choice for home and office use.