These brightly colored textured balls are lightweight, durable and long lasting. The balls make a squeaky noise when your little one grasps them. This helps develop a sense of hearing as they roll, track and bounce. Perfect for tactile and sensory stimulation, these sensory toys have different textures for tactile exploration and sensory development. The bright colors are ideal for visual stimulation and can spark your child's imagination. These make ideal gifts for infants and kids.