Chewbeads Jane Necklace. The Chewbeads Jane necklace offers the kind of bold styling that will keep you ahead of the trends while offering completely safe and useful construction for your baby. This silicone teething necklace for mom combines a benefit for your baby without sacrificing style. 100% silicone beads (similar to pacifiers and nipples). Soft on babies gums and emerging teeth. No BPA, phthalates, cadmium, lead, metals. Easily cleaned with dish soap and water, also dishwasher safe. Necklaces have a breakaway clasp for added safety.