This is a corsage for formal occasions. I have used it a few times at ceremonies. You can wear it by clipping it with a pin or by sticking it in. It is 10cm in diameter and 6-7cm in height. There are some white adhesive marks in the gaps (see photos 3-4), so please refrain from purchasing if you are concerned about this. However, it should not be very noticeable when worn. Thank you for looking.