Review on KEVENZ 12-Pack Badminton Shuttlecocks, Goose Feather Birdies for High Speed, Stability, and Durability by Toby Galbraith

My teammate and I are intermediate players. We played a few games with these shuttlecocks and were immediately disappointed with their slow speed. No matter how hard we hit, those shuttles still don't go all that far. Luckily, my teammate had another box of Wilson shuttlecocks so we could switch to them, which had an immediate impact on the speed of the game. Another problem we noticed was that the springs broke very quickly. Every shuttlecock lost a feather or two towards the end of each game. These shuttlecocks are really good for beginners but not for intermediate or advanced players.