Sensory Rattle & Teether Turn to a familiar friend to soothe baby’s teething soreness. The Outstanding Opus Sensory Rattle & Teether features engage baby all while helping to provide soothing, portable relief. Baby will love to engage with Opus, a familiar character from Baby Einstein books and edutainment, or shake the 3-in-1 toy’s rattle. Promotes cause and effect, Part of the Sense-sationally Curious Collection by Joy Buzz. Easy to grasp handle Made for tiny fingers so baby can play independently. Portable playset Engage baby’s curiosity during travel, stroller time, and more. Engaging eye candy Bright colors and high-contrast colors promote visual development.