I was told by an acquaintance that these are unused. Please make your judgment based on the images. Bridgestone badminton shuttlecocks, practice use, 20 pieces per pack. - Brand: Bridgestone - Quantity: 17 - Model Name: Practice - Color: White - Material: Feathers and cork YONEX Standard 4 pieces I don't know much about badminton, so this is for those who can judge from the images. If you are concerned about various things, I recommend buying from a store. I will do my best to answer any questions you may have.