2-in-1 design functions as both a teether and a stacker with poppers for interactive play colorful set includes 6 vibrant, eye-catching pieces to engage baby 100% food-grade silicone made from safe materials free from BPA, PVC and phthalates gentle on gums textured rings help massage and soothe sore gums supports early development encourages fine motor skills and hand-eye coordination easy-to-clean dishwasher-safe for hassle-free cleaning