The size is about 6-8 cm. We will pack as many as possible into an 80-size box. I think it will hold 30-35 pieces. These are natural products, so the color, size, and how open the caps are will vary. Thank you for your understanding. Please note that we will take great care when shipping, but some damage may occur. Also, we can change the quantity, so please leave a comment if you would like to make any changes.