These teethers are a perfect size and shape for little hands to grasp, and the ideal combination of soft and smooth textures of the silicone beads to massage gums, while the hardness of the beech wood helps relieve the pain and help budding teeth pop through. Natural Beech Wood 100% food grade silicone No BPA, PVC, Phthalates, Lead, and Cadmium. Recommend 3months+