Stable Plastic Material: The LED toy is made of stable plastic and can be used multiple times; this self-returning ball helps improve motor skills and hand-eye coordination, a useful toy for developing intelligence for teenagers; Please note: This toy is detachable, please pay attention to check if it has tight screws when you receive it. LED Light Yo-yo: This entertaining yo-yo utilizes attractive and innovative LED light technology. As the yo-yo spins, the LED lights illuminate and flash, making it more eye-catching and interesting in the dark. Interesting Toy: The responsive ball bearing yo-yo is an ideal toy for teenagers and adults; the combination of bright colors and elegant design can attract people's attention, it's lightweight and portable, allowing people to play it without much pressure, yet it's a healthy and active game. Responsive Yo-yo: Ideal yo-yo for beginners, easy to use, stable, and easy to hang on the yo-yo; the size of each plastic yo-yo is 5.5 x 5.5 x 4 cm/ 2.2 x 2.2 x 1.6 inches, this automatic yo-yo return helps you improve your skills and confidence as you learn new tricks. What You Get: Each set includes 2 responsive yo-yo balls; please note that colors are sent randomly; they make wonderful birthday party favors, creative classroom prizes, plush Christmas stocking stuffers, and treasure chest toys, fun goodie bag fillers, and more.