Features: 1Kids Science Kit: Turn a simple powder into a bouncy ball, kids make their own bouncy ball kit that will allow your child to develop basic skills as they play. 2Versatile: Help your child improve hand?eye coordination, fine motor skills, creativity and imagination while having fun 3Easy To Use: Every kid can make their own bouncy ball, they just dump, dip and bounce and they're done. Equipped with 8 airtight bags to store your kids' great creations. 4Gift: This artistically expressive, fun and imaginative experiment kit is the perfect birthday and holiday gift, and an original and fun holiday gift that any child will love to receive. 5Features: It melts in water, melts in one second, the bouncy ball will bounce and glitter. Item Type: DIY Bouncy Balls Kit Product Material: Elastic Sand Package Included: 8 x Bouncy&nbspBalls Model 8 x Sealed Bag 2 x Pack Luminous Sand 6 x Pack Color Elastic Sand