Glo Pals are the perfect sensory toy for water tables, bath tubs, baby pools, and more. Each Glo Pal has an LED light and fun faces that project on walls when lights are activated from water. Batteries are sealed inside for safety. Each Pal typically lasts for 4+ weeks on average, and are recycleable when their battery life ends. Each pack comes with four Pals inside. For children ages 3 and up.