What You Get: 24 interlocking glitter balls in 6 different color styles, 4 of each style. Ample quantity and variety to share with friends. Safe Material: These flashing light balls are made of soft, quality rubber. They are flexible, safe, soft, functional, and reliable with no unpleasant odor. Their soft, spiky textured surface is safe to touch. Squeeze the balls to make a squeaking sound. They can be applied for a long time. Surprising Design: Each LED ball has a string, which can be put on your finger for play and carrying. Squeeze the ball with your hand to make a squeaking sound, or shake it to emit colorful light that automatically stops after dozens of seconds. Please note the battery is not replaceable; since the ball is sealed, there's no need to replace the battery, and you can still throw, catch, and kick the ball even when the battery is depleted. Effective Toy: Ideal as fidget and sensory toys for children and adults. These light balls have long, rubbery spikes to stimulate hands and aid with sensory challenges. They are so effective that you can use them as therapy balls to help those on the spectrum or with challenges calm down and relax. Applicable Occasions: These LED flashing bouncy balls are incredibly fun to play with in the dark. When they bounce, they light up with bright colors, making them highly eye-catching. Great for baseball, juggling, bending over the ball, squash, baseball, bouncing games, birthday parties, game prizes, and more. Suitable for classrooms, homes, or offices, perfect for parents, teachers, students, and more.