You're Provided: the package comes with 9 transparent colored LED flashing bouncy balls in several colors; Each s ball is 2.17 inch in diameter, whether you are a child or an adult maintaining innocence inside, these light up balls can bring endless fun to you, very suitable for night games Multi Functional Luminous Ball: the light up rubber ball will squeak and glow, which is strong but elastic, tactile, easy to throw, catch and hold, with a soft spiky textured surface, can be touched, watched and experienced, applied for flexible massage and stimulation, hand and finger exercises, help improve a sense of calm, reduce stress and anxiety, and can improve concentration and attention Quality Material: made of rubber, the bouncy stress ball bounces highly; It has no odd smell, reliable and soft, quality and safe, suitable for most people, featured with interactive flashing LED lights, easy to attract attention, but it is not suitable for pet chewing or little ones under 5 years old, and not waterproof; Because it is battery-powered, water will affect the battery Ideal to Use: just bounce the LED spiky ball on a solid surface to activate the internal flash; Designed with LED flashes, our ball will emit a colorful glow for about 10-15 seconds when hit; Beautiful and interesting toys will surely attract little ones' surprises and praise Wide Uses: this LED flashing bouncy ball is very fun to play in the dark, and when it bounces, it will glow with bright lights and colors, very eye-catching; These sensory balls are nice for baseball, baseball, bounce games, birthday parties, game prizes and more, which can be applied for classrooms, homes or offices, ideal for parents, teachers, students and so on Features: Wide application: The light up rubber ball can be applied for piñata bag filler, birthday party gift, classroom gift exchange, school activity reward, Christmas stocking filler, Halloween goodies bag stuffing and so on. Beautiful and practical: The glowing rubber ball is a good toy. When feel a lot of pressure, pick up the ball and see the colorful light, feel extra relaxed and comfortable. Can share the ball with your partners and family. LED design: This spiky ball uses a LED lighting technology, which automatically lights when shake it. It is eye catching and interesting when play it in the dark, attracting more people's attention. Specifications: Material: rubber Color: as pictures show Size: approx. 2.17 inch in diameter Package includes: 9 x Light up rubber balls Notes: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays. Choking risk may exist, adult supervision is needed when using them. Not suitable for pet chewing