The Baby Einstein Ocean Explorers Sea of Sensory teether is a set of 5 ocean-themed, BPA-free teething toys that help soothe baby’s sore gums and engage baby with vibrant colors and unique textures. Features 5 textured sea animal teethers, 2 of which are water filled and chillable for extra teething relief. Large, textured shapes are easy for baby to grasp, and multiple textures and bright colors stimulate baby’s senses. C ring attaches the teether set to carriers, strollers, and diaper bags for soothing on the go.