The Yonex Mavis 500 red shuttlecocks are made to achieve sleek precision and were designed based on the flight timing of feather shuttlecocks. As tested by Yonex, the shuttlecocks boast a rapidrecovery time of an amazing 0.02 seconds after being struck. They offer a stable trajectory for improving your accuracy to make a satisfying swing. Yonex have stated that the Mavis series boast up to five times greater durability compared to regular nylon shuttlecocks. This means you can play more badminton games and get in more hours of practice at less cost!... show more