These are Aerosensa 500 shuttlecocks. Most of them are size 3 (some size 2 and 4 might be mixed in). These are shuttlecocks for basic practice and pattern drills in badminton. They were used in game practice by a team of working adults, and I've collected the ones that are still usable. The main issues are feather fraying and 1-2 broken feathers. I've tried to exclude those with warped cores or reduced flight performance. I will send them in a tube with 13 shuttlecocks, so there is no lid. Please leave a comment if you have any requests. Due to the price including shipping, I cannot offer a significant discount exceeding 1000 yen.