BLUBOON Badminton Shuttlecock Dark Night Glow Birdies Lighting For Outdoor & Indoor Sports Activities 5 PCS 5 x LED Goose Feather Shuttlecock - Perfect for playing in the dark environment. The lights turn on by a switch on the inside, so you can't easily shut it off accidentally This light-up birdies are very bright and durable, change colors and the batteries last 20 hours Material: goose feather, feather, SMD lamps, Electronic products. Inexpensive shuttlecocks for beginners.