Push pop sensory toys made of high-grade Silicone materials.Press the bubble, it will make a "pop" sound, this sound sounds very cute, turn it over, start again, and play repeatedly. they are developing children's intelligence, cultivating logical reasoning ability, and exercising intellectual arithmetic and planning ability. At the same time, it can prevent the brain degeneration of the elderly and keep the brain active. You can choose assorted colors. 2.36" L x 2.36" W x 0.6" H